20 years after a climate disaster, adventurers known as "salvagers" roam the oceans looking for treasure. The salvagers Aika and Rion are looking for the energy source "Lagu". But siblings Nena and Rudolf Hagen are also looking for Lagu.
Aika and Rion are captured by the Hagen twins. Rudolf falls in love with Aika. In exchange for sex with her, he is willing to tell her everything about Lagu. Meanwhile, Rion escapes. Gastor is aboard as well and tries to save Aika.
Aika is free but a heavy battle ensues aboard. Aika tries to rescue Rion who wants to gather intel about Lagu. Then they get help: The Hagen siblings are being attacked by an armada.