Since 1971, SCP-2399 has been the recipient of an unending 
stream of electromagnetic-based communications originating in the 
Triangulum Galaxy, roughly 3 million light years from Earth. The 
means of SCP-2399's travel to our solar system, and the means of 
its communications, are all unknown. From 1971 to 1985, SCP-2399 
continuously received a single encoded message which, through 
codebreaking and translation efforts, appeared to be a command to 
repair the damage it incurred upon entering our solar system. After 
this time, the BARRIER array was established to intercept these 
messages. This coincided with a period of radio silence from the 
origin of the communications, until 1996, when a different order 
began transmitting. The BARRIER array has thus far prevented 
SCP-2399 from receiving this command (See Addendum 2399- 
Comm-Log). 


SCP-2399 Discovery Notes: 
+ ACCESS DATA 
SCP-2399 was originally observed, albeit unknowingly, 


by Giovanni Cassini in 1665. The following is taken 
directly from Cassini's journal on the event, translated 


from Italian to English. 


08/10/1665 

| have observed something extraordinary in 
the heavens. Last night, as | gazed through my 
looking glass, | saw what appeared to be a 
star of great luminescence streak through the 
far reaches of our solar system. | have never 
recorded an object moving so fast; it had 
surpassed the outer planets in fewer than two 
hours! As | watched, by my own two eyes, | 
saw it slow as it closed on Jupiter, make a 
sharp turn, and disappear into the planet itself. 
| saw many bursts of light afterwards, but 
although | continued to peer at it until the Sun 
broke, | saw no additional disturbances in the 
night sky. | must continue to document these 
changes, and will alert my colleagues when 
the day is upon me. 


15/10/1665 

| took Peter to my observation point last night, 
but a week from the night | saw the fire rain 
upon Jupiter in the heavens. He brought along 
his own looking glass, and together we aimed 
our view upon the giant. To our surprise, a 
magnificent change has occurred! Where once 
the distant world only showed bands of color, 
there is now a great red spot where the star 
came to rest on the surface of Jupiter. Peter 
was incredulous, of course, that such an 
amazing discovery could have taken place 
before our very eyes. | will continue to take 
note of this. 


18/10/1665 

Tonight as | peered through my looking glass, | 
swear on my life that | observed what looked 
to me like explosions and starbursts 
emanating from our red spot. | fear my mind is 


playing tricks on me, for there has been no 
record of such violent outbursts by a heavenly 
body since the dawn of astronomy. | will 
consult with Peter on the morrow, and 
hopefully glean from him some advice on the 
matter. 


19/10/1665 

Peter sees the same as I! As | approached him 
with my concerns, he leveled the same with 
me, and through our following discussion we 
concluded that it must be a powerful reaction 
to the falling star | saw upon the first night, and 
not a product of our own shortcomings. | am 
left wondering what cataclysmic event must be 
taking place upon our heavenly neighbour. Our 
work to document this must go on. 


Addendum 2399-2b: 


+ ACCESS ADDENDUM 


At hourson // , BARRIER Unit 53 observed one of 
SCP-2399's repair drones closing on a piece of debris, 
quickly determined to be part of a damaged 
communications array. Because of the nature of this 
specific component, and the ramifications of allowing 
SCP-2399 to recover it, it was ordered that BARRIER 
Unit 45 fire upon the drone with its on-board concussion 
batteries. 


Batteries were discharged; however, the drone appeared 
undamaged. Footage obtained by BARRIER Unit 53 
shows that, while the payload in question was launched 
towards the repair drone, it was destroyed within 5 km of 
the target by additional charges originating from 
SCP-2399. Command lost contact with BARRIER Unit 
45 15 seconds after initial discharge, with video 
observation showing SCP-2399 [DATA EXPUNGED] the 
resulting spacial anomaly originating in - - - [DATA 
EXPUNGED] the termination of BARRIER Unit 45 by 


BARRIER Units 44, 51, and 55. 


Under no circumstances are any BARRIER Units to 
further engage either SCP-2399 or drones released by 
SCP-2399. 


Addendum 2399-2c: Project Gigas: 
+ INFORMATION RESTRICTED TO LEVEL 4 PERSONNEL OR ABC 


After the events of / / , it was decided that necessary 
force would be authorized to destroy or incapacitate 
SCP-2399. Using Foundation resources, as well as 
resources from 45 nations (notably, : ; 
: ; , and 

), aplatform of warheads bearing Mt 
payloads and warheads bearing EMP detonators was 
launched and placed in orbit around Europa. On // at 

hours with orders from 15 heads of state and O5, 
O05, 05,05, and O5, the entire payload of Project 
Gigas was launched towards SCP-2399. 


' 
a. J 


[DATA EXPUNGED] 


Efforts to develop alternative methods of eliminating 
SCP-2399 are currently underway. 


Addendum 2399-L5: 
+ INFORMATION RESTRICTED TO LEVEL 4 PERSONNEL OR ABC 
So, SCP-2399. 


Have you ever sat and wondered, maybe after 
you hear about a car accident on a street you 
were just on, or a bombing in a city you were 
visiting, just how lucky you are to be alive? 
Just how many things have to go right for you 
to continue to exist? A few seconds too late, a 
few seconds too early, and somebody reaches 
for something they dropped and a busload of 
people run into another busload of people. 


Sometimes this kind of thing does happen, as 
we've seen, far too often. But that's what we're 
here for. To protect those who can't protect 
themselves from things that they wouldn't even 
know to protect themselves from. 


We can't do it all, though. As many things as 
we've been able to contain, as many things as 
we've been able to keep under lock that would 
threaten to destroy us all, still far too many 
remain that we can't do anything about. 
Whether they're too big, or too fast, or too 
powerful, any of these things could blink and 
wipe humanity from existence. The fact that 
they haven't done so yet is just luck. 
SCP-2399, however, is different. 


We have little information regarding 
SCP-2399's motives, origins, and full 
capabilities. We do not understand how it is 
capable of communicating over such large 
distances, or why those who constructed it (if it 
was, in fact, constructed) sent it to us in the 
first place. We do not know what would 
happen if SCP-2399 is able to fully repair itself, 
or if part of our array would break down and a 
message would get through. We do not know 
this, So we must assume the worst. Judging by 
what we've seen, were SCP-2399 to have 
reached Earth, it would have led to our timely 
destruction. 


But sometimes humanity gets a little help. 
Sometimes something steps in the way of the 
apocalypse. For us, and for SCP-2399, it was 
Jupiter. As SCP-2399 began to slow on its 
approach to Earth, Cassini saw what we've 
been able to ascertain; that SCP-2399 struck 
lo, was damaged, and was unable to escape 
the gravitational pull of Jupiter. Its weapons 


activated as they were intended, but it was 
Jupiter that experienced doomsday, not us. 


Eventually, though, it's likely that SCP-2399 
will resume full functionality, and will likely be 
able to pull away from Jupiter and proceed to 
its target. As of now, we can keep hurling 
bombs and EMPs at it all we want, but we've 
got no indication that any of it will so much as 
scratch the thing, on the contrary, experience 
dictates it would do nothing at all. If this were 
to happen now, we would undoubtedly be 
destroyed. 


Jupiter has given us time. For now, SCP-2399 
will remain there, reassembling itself, while we 
devise some way to stop it. Like it or not, we 
are in an arms race with this thing. Our best 
guesses give us something like 25 years until 
itis able to hear past our dampening array. 
Until then, we must seize the opportunity that 
has been laid before us. We must use the time 
we have been given, and not let it be wasted. 


So we devised Protocol LEGIONNAIRE. One 
gigantic EMP, powered by god-knows-what, 
followed by a volley of nukes big enough to 
wipe out our civilization a thousand times over. 
A blunt plan, and simple, and likely futile. Our 
researchers, and researchers around the 
globe, have yet to devise even a way to deliver 
that kind of pulse, let alone a way to power it. 
There is no indication whatsoever that we will 
be able to complete LEGIONNAIRE on time, 
or if it will do what is intended once it is 
completed. But we must try. We must do 
something. Even if we have to drain our banks 
and empty our mines, we must try. 


Not often do we get a chance to see the 
swerving bus that will end our lives, and step 


out of the way. Jupiter, unknowingly, has 
offered us that chance. | suggest we take it. 


Randall McAllan 
Director 
BARRIER Project, Site 


Addendum 2399-Comm-Log: 
+ INFORMATION RESTRICTED TO LEVEL 4 PERSONNEL OR ABC 


All messages logged are to be understood as having 
repeated themselves, continuously, until either a new 
message is logged, or a logged instance of radio silence. 


/ /1971- Unit is damaged: Repair 

/ /1985- Updating Orders: Maintain Position: 
Repair 

/ /1985- Period of radio silence, BARRIER 
Array is established. 

/ /1996- Unit is out of range of target: 
Proceed to planet #3 in system 
[COORDINATES REDACTED): Repair 

/ /2015- Unit is out of range of target: 
Proceed to planet #3 in system 
[COORDINATES REDACTED): Priority is 
target: Cease repairs 


Footnotes 
1. The repair ofSCP-1396has been proposed, but has been deemed 
currently unfeasible. 


« SCP-2398 | SCP-2399 | SCP-2400 » 


Articles 2400-2499 


SCP-2400: Temporal Dilation Facility 


Item #: SCP-2400 
Object Class: Safe 


Special Containment Procedures: SCP-2400 is contained on-site 
at Site-59, which has been constructed around the anomaly. Only 
personnel with 4/2400 Clearance are permitted to access 
SCP-2400's containment chamber. 


+ Enter Credentials 
Object Class: Thaumiel 


Special Containment Procedures: SCP-2400 must 
remain open when SCP-2400-A is not in use. Use of 
SCP-2400-A (and by extension, Site-64T) requires 
approval from the Site-59 Director (currently Dr. Charles 
Anborough) and the attached Temporal Anomalies 
Adviser (currently Dr. Thaddeus Xyank). While 
SCP-2400-A is in use, the Site-64T supervisor must 
submit weekly reports to the Site-59 Director, which, due 
to SCP-2400-A's properties, should be received every 
sixty-three (63) minutes. Non-D-Class personnel 
assigned to Site-64T should be chosen from unmarried 
individuals, preferably with no living family. Individuals 
with suicidal psychopathology are also preferred. Due to 
the nature of SCP-2400-A's effects on its inhabitants, 
personnel assigned to Site-64T are to be declared legally 
dead, with appropriate Foundation benefits paid to their 
family. 


Personnel maintaining residency in SCP-2400-A past the 
expiration of their assignment is forbidden. Travelling 
further than 100 meters past the perimeter of Site-64T is 
also forbidden, barring SCP-2400-A reconnaissance 


| think we're done for today. - Researcher Zembrovski 


Money entered: 500 yen 

SCP-261 Powered or Unpowered: Powered 

Item description: Madam Jesute's Blueberry Cigarettes- A slightly 
larger than average sized cigarette package decorated in blue trim 
and gold letters, the sub-labeling reads "Now lasts longer!". Inside, 
the package contained 21 blue tinged cigarettes and a small 
retractable Cigarette holder resembling ones popular during the 
early 20th century. When one was smoked (using the holder), the 
class-D personnel described a pleasant blueberry taste in addition to 
the tobacco. The Smoke emited had a slight blue hue to it as well. 
Company labeled as the manufacturers on packaging is Yang- 
Marlboro company is not known to exist. 


Money entered: 300 yen 

SCP-261 Powered or Unpowered: Powered 

Item description: A 500ml plastic bottle without labeling containing 
a red liquid confirmed to be normal apple juice. The taste is 
described to be "Delicious, yet very spicy." 


Money entered: 52 yen 

SCP-261 Powered or Unpowered: Unpowered 

Item Description: A unpackaged slab of balsa wood, 14 cm by 

5.7 cm by 6.3 mm. Unmarked, save for an inscribed image of an ant. 
Otherwise unremarkable. 


Money entered: 73,266 yen 

SCP-261 Powered or Unpowered: Unpowered 

Item Description: A small plastic bag filled with water. Water 
contained several hundred unusually large Antarctic Krill (Euphausia 
superba). Bag possessed a label, bearing 48 colored polygons 
arranged into a 6 by 8 rectangular pattern. 


Money entered: 150 yen 
SCP-261 Powered or Unpowered: Unpowered 


missions. Any anomalous activity occurring in 
SCP-2400-A that is outstanding from the area's 
established properties must be reported to Site-59 
immediately. 


At all times, four (4) demolition charges must be 
positioned adjacent to SCP-2400, two (2) on Site-59's 
side and two (2) on Site-64T's side. In the event of 
anomalous activity occurring within SCP-2400-A which 
endangers Site-59, these charges are to be detonated. 


Access to the Site-64T Generator Room (Room 128-E) 
is forbidden barring approval from the Site-59 Director 
(see Addendum [2400-001] for details). 


Description: SCP-2400 is a plain steel door inset on a fragment of 
concrete wall. The wall fragment is irregularly-shaped and roughly 
3.71m x 2.25m, while the door is 0.65m x 0.91m. The origin of 
SCP-2400 is unclear. 


When SCP-2400 is open, it functions as a space-time aperture to an 
area now designated SCP-2400-A. A second instance of SCP-2400 
is present in SCP-2400-A, and is the only object on an otherwise 
featureless horizontal plane. The size of SCP-2400-A is 
undetermined, and by all accounts, appears to be a limitless space. 
The surface of the horizontal plane is composed of an unidentified 
and indestructible white substance. This material is smooth and 
similar in texture to concrete. The atmosphere is consistent with the 
terrestrial location of SCP-2400. At all times, a star consistent with 
the Sun is visible in the sky, directly above SCP-2400. 


When the door of SCP-2400 is closed, the rate of time within 
SCP-2400-A, relative to the exterior world, undergoes severe 
temporal dilation. One (1) second of normal time corresponds 
approximately to one hundred-forty (140) seconds within SCP-2400- 
A. While SCP-2400 is closed, SCP-2400-A and the exterior world 
are virtually independent of and inaccessible to one another; neither 
matter nor energy is capable of crossing the threshold. While 
SCP-2400 is open, however, the rate of relative time inside 
SCP-2400-A is the same as Earth. 


+ Enter Credentials 


It was determined that the nature of SCP-2400-A's 
temporal anomaly was counter-productive to 
containment of other SCP objects in the area. However, 
it was also suggested that SCP-2400-A could be utilized 
for the expedited production of containment critical 
materials, or the development of containment protocols 
(including technological research and testing) of other 
anomalies. This proposal was approved, and Site-64T 
was constructed inside SCP-2400-A. 


Site-64T consists of five (5) floors, the base of which 
covers an area of 1.51km2. The first floor contains the 
administrative offices, power plant, utilities, and storage. 
The second floor consists of personnel quarters and 
recreational areas. The third and fourth floors feature 
production facilities for resources including alloys, 
polymers, complex chemicals, non-perishable foods, and 
weapons. The fifth floor is reserved for research and 
development. 


Addendum [2400-001]: 
+ Enter Credentials