Now that Jesse and the gang have defeated the Wither Storm, saved the world, and become super famous heroes, life has gotten a little more ... complicated. With more responsibilities and less time for adventures, old friendships have started to get lost, at least until Jesse's hand is caught in a strange glove that belongs to an ancient underwater temple. Along with his old friends and new colleagues, Jesse embarks on a new journey full of difficult decisions, fun, and at least one temperamental flame.