In "Hotel Transylvania 3 - A Monster Vacation", we accompany our favourite monster family on board a luxury monster cruise ship so that Drak can take a summer vacation from working in his hotel, where he usually gives everyone else a nice vacation. Everything is going wonderfully for the Drac Pack: the monsters enjoy all the fun the cruise has to offer on board - from monster volleyball to exotic excursions - and also freshen up their sallow complexions in the moonlight. But the dream trip turns into a nightmare when Mavis discovers that Drak has fallen in love with the mysterious captain Ericka. Because she is harboring a dangerous secret that could destroy the whole monstrosity.