Mia and Paula need to study, but it’s too loud in the dorm to concentrate. Mia persuades Vincent to let them use his garden house as a quiet study spot, but he’s resistant. Vincent and Paula are left awkwardly alone when Centopia comes calling, sending Mia and the elves on an expedition to the watery domain of Polytheus. He’s got a piece of the Trumptus, but the tightfisted trader won’t give it up without a price.