The Amulet of Aurora Theft

The Amulet of Aurora has been stolen, for real! And this time, it's once again the work of that burdensome Junjie and friends, only this time they were helping a cult of rogue Sea Ponies who refer themselves as The Cult of Sea, which their leader, Preistess Mariana Trench, dreams and desires to make the world of Equestria into an ocean world, and use Sea Pony magic to turn all native creatures into sea creatures so to return all life into the sea, thinking that the world would become a better place submerged underwater. Although, our heroes are left confused on why Junjie and friends would bother helping a random cult as destructive as the Cult of Sea, espeically since Junjie and friends don't seem like their usual selves as his compadraies made nary a complaint about how stupid this plan is, implying that the four are under a spell, and it doesn't feel reckindisable as even Mariana's doing. Reguardless, the heroes choose to worry about it later as they go out to stop the Cult of Sea's plans and bring the cultists to justice, all the while figuring out how to get into the Cult's Leviathon Whale Skeleton lair and pass their Litteral Sea Lion guard animals.