Drac's taking a break from providing everyone else's holiday at the hotel this summer and treating the whole family to a luxury monster cruise. It's smooth sailing at first as Dracs pack indulge in all of the shipboard fun the cruise has to offer. But the dream monster vacation turns into a real nightmare when Mavis realises Drac has fallen for the mysterious captain of the ship, Ericka, who hides a dangerous secret that could destroy all of monsterkind.
