Episodes

As of April 3rd, 2022 there are currently 125 story episodes, with three sets of special episodes.

Season 1 consists of episodes 1 - 41, and Season 2 consists of episodes 42 - 125. Season 3 currently consists of episodes 126 and onward. The series is expected to continue for two or three more seasons after season 3.

Between Seasons 1 and 2 are five "extra episodes". After the Season 2 mid-season finale are four "special episodes". And immediately following Season 2's finale are three "filler episodes".

## Plot Synopsis

### Season 1

The Sharks, having endured a horrible curse for 100 hard years, finally have a chance to rid themselves of the curse entirely by fulfilling their prophecy. All it will take, is for their prince, the one shark not affected by the curse, to kill the Beacon, a young wandering Merman who was born to fulfill prophecies, yet wishes more than anything that he didn't have to.

Prince Siren, however, is unwilling to fulfill the prophecy. Wishing to find another way to free his people from the sharks, he decides instead to help the Beacon, Kappa, escape without his people noticing. Siren brings Kappa food and attempts to discover a plan that will work. Over the next few days, both Siren and Kappa grow closer to each other, while Susca, Queen of the Sharks, and Siren's mother, grows more suspicious that Siren won't be able to kill the Beacon.

Meanwhile, outside the hidden castle, other colonies of merfolk have discovered that the Sharks plan to kill the Beacon, which would mean they would never have *their* prophecies fulfilled. This places them in extreme disarray, as they scramble to do the same as Siren and Kappa, to rescue the Beacon.

It all comes to a head, as the Castle Colonies' leaders, Queen Nee and Queen Krilli, appear at the Castle of Sharks' entrance bearing gifts, delaying Susca from completing her prophecy by killing the Beacon. Siren volunteers to give them a tour of the castle, seeing an opportunity to help Kappa. Leading them to the dungeon, Siren discusses with them how they will escape with Kappa unnoticed. Hiding him in their bag, they attempt to leave the castle, only for Queen Susca to strike the bag as they leave on a hunch, revealing Kappa.

As Nee and Krilli fling the stink-plants as a distraction, Kappa and Siren attempt to flee. Seeking passage from Skiff, one of Siren's childhood best friends, and one of the castle's guards, they make it out of the castle. In the cave outside, they run into issues with the Stalactite Eater, but make it past, only to finally have their efforts shown to be in vain as the guards recapture the Beacon and Siren, thanks to the prophecy's magnetic pull.

Back in the dungeon, Kappa has once again been imprisoned. Elder Selkie, one of the older Sharks, encourages Susca to finally come clean to Siren about the curse. Which she does. Revealing that she had altered the prophecy long before he was born to depict Siren killing Kappa, rather than Kappa killing Siren. However, just as she lets Kappa out of his cell, she locks Siren and Selkie away and announces that she's going to kill Kappa anyway to keep Siren safe.

Staging a public execution, Susca gathers the Sharks to watch as the Beacon is killed, while Siren escapes the jail cell with the help of Selkie's advice. Nee and Krilli are set loose by Seko, who was saved by Kappa earlier when dealing with the Stalactite Eater, but they only manage to delay the execution by a very small amount of time. Only long enough for Siren to swim past his mother and end up taking the blow in Kappa's place, giving him a massive scar across his back.

In the wake of the event, Susca comes clean to all the Sharks. The council of Elders removed Susca's title of Queen as punishment for almost murdering the Beacon, and removed Elder Selkie from the council for keeping her secret.

Nee and Krilli take Kappa away to safety, while the Sharks move Siren to the healer's den to recover. Kappa sneaks back into the castle with the help of Skiff, to say goodbye, and he and Siren finally share a kiss. Motivated to live out his dream of stopping being the Beacon, Kappa ventures out into the open seas... not knowing where to begin, while Siren continues to lay in bed and recover, but has resolved to find a new way to stop the curse without having to sacrifice anyone.

### Season 3

Season 3 will begin on Episode 126, and will have a romantic plot centering around Kappa and Siren adapting to their newly obtained hearts. This is also likely the final season of Castle Swimmer.

## Episode by Episode Synopsis

### Season 1

Episode 1 - The beacon hatches, and fulfils his first prophecy.

Episode 2 - A timeskip to 20 years later, we are introduced to the Castle Colonies' prophecies and the shark civilisation.

Episode 3 - We learn of the curse upon the shark people, which will be broken once the beacon is killed. Prince Siren goes to kill Kappa.

Episode 4 - Siren and Kappa talk, Siren decides he can't kill Kappa.

Episode 5 - Siren leaves and tells the sharks he won't kill Kappa yet, because the God of the Surface told him not to. Queen Susca and Elder Selkie see through his lie. The Castle Colonies discover that the sharks plan to kill the beacon.

Episode 6 - Prince Siren joins the other sharks in the mess hall, and has an insightful conversation with Sig.

Episode 7 - Siren brings some food for Kappa to eat, and the two talk.

Episode 8 - Queen Susca and Elder Selkie wonder what is taking Siren so long. Siren and Kappa continue talking.

Episode 9 - Siren and Kappa discuss what will happen if Siren doesn't kill Kappa. Susca confronts Siren about his wavering.

Episode 10 - Four more days pass of Siren going to talk with Kappa, his excuses becoming lazier and lazier. Susca decides she will kill the beacon herself if Siren doesn't. Kappa asks Siren to cut his hand to check whether the curse needs him slain.

Episode 11 - They make the cut, but don't know if the curse is broken. Siren helps his mother paint a mural of the beacon's death. Three Barracudas break into the castle.

Episode 12 - Susca is alerted to the break in. Skiff and Seko are assigned to escort Siren to his room, but the Barracudas find them before they reach it.

Episode 13 - Skiff fights them off, until the curse intervenes and breaks his weapon. Siren is almost killed, but Susca intervenes.

Episode 14 - Susca fights valiantly until the backup arrives. The Barracudas are locked up.

Episode 15 - The Barracudas are dealt with, and Siren and Susca talk.

Episode 16 - Queen Nee and Queen Krilli come up with a plan to save the beacon. Siren heads to the Healer's Den and talks with Skiff and his old friend Silver.

Episode 17 - Siren talks with Silver about the curse and reminisces on the past.

Episode 18 -

Episode 19 -

Episode 20 -

Episode 21 -

Episode 22 -

Episode 23 -

Episode 24 -

Episode 25 -

Episode 26 -

Episode 27 -

Episode 28 -

Episode 29 -

Episode 30 -

Episode 31 -

Episode 32 -

Episode 33 -

Episode 34 - It is revealed that Susca altered the prophecy, and that it was in fact Siren who must be killed by Kappa for the prophecy to be fulfilled and the curse broken.

Episode 35 -

Episode 36 -

Episode 37 -

Episode 38 -

Episode 39 -

Episode 40 -

Episode 41 -

#### Extra Episodes

Extra Episode 1 -

Extra Episode 2 -

Extra Episode 3 -

Extra Episode 4 -

### Season 2

#### Season 2A

(S2) Episode 42 -

(S2) Episode 43 -

(S2) Episode 44 -

(S2) Episode 45 -

(S2) Episode 46 -

(S2) Episode 47 -

(S2) Episode 48 -

(S2) Episode 49 -

(S2) Episode 50 -

(S2) Episode 51 -

(S2) Episode 52 -

(S2) Episode 53 -

(S2) Episode 54 -

(S2) Episode 55 -

(S2) Episode 56 -

(S2) Episode 57 -

(S2) Episode 58 -

(S2) Episode 59 -

(S2) Episode 60 -

(S2) Episode 61 -

(S2) Episode 62 -

(S2) Episode 63 -

(S2) Episode 64 -

(S2) Episode 65 -

(S2) Episode 66 -

(S2) Episode 67 -

(S2) Episode 68 -

(S2) Episode 69 -

(S2) Episode 70 -

(S2) Episode 71 -

(S2) Episode 72 -

(S2) Episode 73 -

(S2) Episode 74 -

(S2) Episode 75 -

(S2) Episode 76 -

(S2) Episode 77 -

(S2) Episode 78 -

(S2) Episode 79 -

(S2) Episode 80 -

(S2) Episode 81 -

(S2) Episode 82 -

(S2) Episode 83 -

(S2) Episode 84 -

(S2) Episode 85 -

(S2) Episode 86 -

#### Special Episodes

(S2) Special Episode 1 -

(S2) Special Episode 2 -

(S2) Special Episode 3 -

(S2) Special Episode 4 -

(S2) Teaser Episode -

#### Season 2B

(S2) Episode 87 -

(S2) Episode 88 -

(S2) Episode 89 -

(S2) Episode 90 -

(S2) Episode 91 -

(S2) Episode 92 -

(S2) Episode 93 -

(S2) Episode 94 -

(S2) Episode 95 -

(S2) Episode 96 -

(S2) Episode 97 -

(S2) Episode 98 -

(S2) Episode 99 -

(S2) Episode 100 -

(S2) Episode 101 -

(S2) Episode 102 -

(S2) Episode 103 -

(S2) Episode 104 -

(S2) Episode 105 -

(S2) Episode 106 -

(S2) Episode 107 -

(S2) Episode 108 -

(S2) Episode 109 -

(S2) Episode 110 -

(S2) Episode 111 -

(S2) Episode 112 -

(S2) Episode 113 -

(S2) Episode 114 -

(S2) Episode 115 -

(S2) Episode 116 -

(S2) Episode 117 -

(S2) Episode 118 -

(S2) Episode 119 -

(S2) Episode 120 -

(S2) Episode 121 -

(S2) Episode 122 -

(S2) Episode 123 -

(S2) Episode 124 -

(S2) Episode 125 (Season 2 Finale) -

#### Post Season 2 Filler Episodes

(Post S2) Filler Episode 1 -

(Post S2) Filler Episode 2 -

(Post S2) Filler Episode 3 -

1. ↑ Wendy confirmed in a Tumblr ask that the series will continue after S3.