The Nuka - Cola Challenge The Nuka - Cola Challenge is a side quest in " Fallout 3 " connected to the Nuka - Cola soft drink company and its prototype beverage , Nuka - Cola Quantum . It is also an Xbox 360 and PC achievement and a PlayStation 3 trophy . Detailed walkthrough . Take Sierra ' s Nuka - Cola tour . To start this quest , find Sierra Petrovita at Girdershade , which is located northwest of Jocko ' s Pop & Gas stop and southwest of Smith Casey ' s garage . Upon greeting the Lone Wanderer , she offers to give the " Nuka - Cola tour , " which consists of viewing the large number of Nuka - Cola collectibles she owns . If the Lone Wanderer agrees to take the tour , she will show them around her home , discuss various Nuka - Cola facts and talk about some of the items in the room . The tour can be paused after each exhibit , as Sierra won ' t move unless the player moves more than the camera . After the tour , she gives the Lone Wanderer an ice cold Nuka - Cola . Immediately after the tour , she ' ll talk about the Nuka - Cola Quantum . With a rather easy Speech check , one can uncover that Sierra intends to give the Wanderer the schematics to the Nuka - grenade upon completing the challenge . Talk to Sierra . She then asks the Lone Wanderer to collect Nuka - Cola Quantums and says she will pay 40 caps for each bottle . Waiting outside her house , Ronald Laren will ask the Lone Wanderer to instead give him the Nuka - Cola Quantums , as he hopes that giving them to Sierra will improve his chances of " plowing her bean field . " He offers to pay the same price for the Quantums , though a successful Speech check will cause him to double the payment . However , by choosing him over Sierra , the Lone Wanderer will lose the chance for Schematics - Nuka grenade that would have been received from Sierra . With the Black Widow perk , a female Lone Wanderer has the option to offer a threesome in exchange for him finding the bottles , causing him to eagerly run off to his death . His body can then be found inside the main entrance of the Nuka - Cola plant , or somewhere on a more or less straight line from Girdershade to the plant if he happens to be killed on the way . If the Lone Wanderer escorts Ronald and he successfully reaches the Nuka - Cola plant , he will simply stand in the lobby . Leaving the area and re - entering will cause Ronald to die . Recover 30 bottles of Nuka - Cola Quantum . Nuka - Cola Quantums are rare items . There are only 94 loose in the base game ( plus a 10 % chance of finding one in a Nuka - Cola vending machine ) and only a dozen or so more with add - ons . They are easy to see because they glow ( only if HDR is enabled on the PC version ) . For a list of bottle locations , see Nuka - Cola Quantum . Of course , the Quantum Chemist perk makes this whole task much easier , especially when in Sierra ' s house . She has a large amount of Nuka - Cola all over the place which could be stolen and automatically converted into Quantum , though this will gain negative Karma . Recover the shipping manifest ( optional ) . A good place to start looking is the Nuka - Cola plant . Aside from a few Quantums , a plant terminal entry can be found with shipping details for Quantum . The code for this terminal can be obtained from Milo by either passing a Speech check , killing him , obtaining an employee badge by finding the note Welcome to the Nuka - Cola family ! or by using a dialogue choice accessible with the Robotics Expert perk . The code is used in the computer terminal in the room where Milo is found . After using the code , select the option to retrieve the shipping manifest . The manifest details three locations where shipments of the Nuka - Cola Quantum were in the process of delivery : the shopping center at Paradise Falls , Super - Duper Mart and Old Olney grocery . At the Super - Duper Mart , the shipment of Nuka - Cola Quantum can be found in the back storeroom near the fallen shelves next to the protectron . There are three of them . It is in the same room as the pharmacy supplies . In Paradise Falls , five Quantums can be found in Eulogy ' s Pad underneath the stairs next to a bed . Stealing them does not cost Karma but getting caught will turn the whole town hostile . Investigating Old Olney makes it clear the shipment of Quantum never made it there . The skeletal remains of the driver can be found on the steps outside a building in Old Olney along with the Nuka - Cola accident report . The note reveals that there was an accident and the driver abandoned the truck to look for help ( which never came because the bombs fell ) . The truck with its Nuka - Cola Quantum can be found by exploring the highways surrounding the town . There are about 5 Quantums in the truck and about 28 regular Nuka - Colas . It is found about halfway between Old Olney and Chaste Acres Dairy Farm . Just for the Taste of It ( optional ) . Just for the Taste of It is an optional unmarked quest available only before and during The Nuka - Cola Challenge .