[s2e3] The Grand Surrender Now

: Ash eventually finds Harp, but she is horrified to discover her sister has been reduced to a mindless, zombie-like thrall. Realizing Harp is "too far gone" to be saved, Ash is forced to leave her behind as the pocket dimension collapses following the key's removal.

: The creature’s death causes the rings around Serepentis to vanish, revealing they were actually part of its body.

In the Final Space episode (Season 2, Episode 3), the crew of the Crimson Light journeys to the planet Serepentis to retrieve the second Dimensional Key. The story centers on the tragic homecoming of Ash Graven , who must confront the "god" that devastated her life: an eldritch serpent named Werthrent . The Quest for the Dimensional Key

The mission is triggered when H.U.E. notices that Ash’s tattoo matches the signature of a Dimensional Key. This leads the team to Serepentis, a planet dominated by Werthrent, an ancient being worshipped as a deity. The crew is eventually swallowed by the massive creature, entering a pocket dimension within its body. Ash Graven’s Personal Tragedy

: The Dimensional Key is found within Werthrent’s heart. To reach it, the team must pass a series of riddles posed by a guardian named Septim.

: Nightfall hints that Ash’s devastating experience may unlock a greater potential for her powers later on.

: Clarence accidentally swallows the recovered Dimensional Key, requiring a "retreat" to the bathroom to retrieve it.