ThunderCats (2011) (2011)

S1E3 Ramlak Rising

Having fled their ravaged city with the Sword of Omens in hand, the team comes across the Fishmen, who navigate the treacherous quicksand sea in pursuit of a colossal sea beast. While the ThunderCats are on a mission to locate the Book of Omens, Lion-O finds himself consumed by a desire for vengeance against Mumm-Ra, overshadowing their primary quest.