In 1897, Dracula and his friends travel in disguise on a train to Budapest. However, Dracula's arch-enemy Professor Abraham Van Helsing boards the train and unveils the monsters; the monsters escape by climbing through the roof, and Dracula pushes his friends off the train for their safety. Van Helsing becomes obsessed with destroying Dracula, but is constantly outsmarted by him.
In the present day, Dracula is running his hotel business smoothly with his daughter Mavis and son-in-law Johnny. Drac is depressed that he has remained single since his wife Martha's death despite his attempts to meet someone. Misinterpreting this as stress from overwork, Mavis books a cruise so they can all take a break and spend more time together as a family. Dracula, Johnny, Mavis, Dennis, and the hotel guests board a cruise ship called the Legacy. Dracula sees the ship's human captain, Ericka, and immediately falls for her, something that he thought was impossible as he had already "zinged" before.
Ericka goes to a private and secret room on the lower decks where she meets Abraham Van Helsing, secretly her great-grandfather. Van Helsing has almost entirely mechanized his body to avoid death, and has a plan to eliminate all the monsters: on the cruise's arrival at the lost city of Atlantis, he will use an Instrument of Destruction in Atlantis' ruins. Van Helsing makes Ericka promise to not assassinate Dracula beforehand, but she makes repeated unsuccessful attempts to do so anyway. Dracula's friends hear Ericka complain about her inability to get him and misinterpret this as a sign of affection. Dracula nervously asks Ericka out on a date, and she accepts since she sees this as another opportunity to kill him. As they dine on a deserted island, Ericka unexpectedly begins to fall in love with Drac, after they learn about each other's pasts.
Mavis discovers Dracula is interested in Ericka and becomes suspicious of Ericka's motives. The cruise ship reaches Atlantis, which has been converted into a casino; Dracula decides to tell Mavis the truth about Ericka but gets distracted seeing Ericka enter an underground crypt. Drac follows her, with Mavis not far behind, and learns that Ericka is after a "family heirloom". With Dracula's help, she evades the booby traps around the object and escapes. Mavis arrives and confronts them, and Dracula confesses that he "zinged" with Ericka, to Mavis' surprise and confusion. After Ericka is told what a "zing" is, she rejects Dracula's romantic feelings, leaving Dracula dejected.
A regretful Ericka gives Van Helsing the object—the Instrument of Destruction—and he sets a trap for the monsters at a dance party. Noticing that Dracula is still depressed about Ericka, Mavis takes advice from Johnny and tells her father to talk to Ericka, admitting that she was afraid of him leaving her, which allays Drac's fears. Van Helsing shows up and pushes away the DJ, and a saddened Ericka is forced to reveal that she is his great-granddaughter. Van Helsing unveils the Instrument of Destruction, a case for a music note sheet, and plays a song that drives a friendly Kraken living near the island to attack the monsters. Dracula tries to stop the Kraken, but gets injured. Ericka saves Dracula from the Kraken and pleads with her great-grandfather to stop the destruction, confessing her love for Drac. This infuriates Van Helsing, and he attacks them both.
To pacify the Kraken, Johnny opens up a portable DJ kit and plays positive songs ("Good Vibrations" and "Don't Worry, Be Happy") to beat Van Helsing's song. Upon playing the "Macarena," the Kraken is relaxed and happy for good; Van Helsing is unable to counter the song as everyone begins to dance, including the music sheet, which rips itself to pieces during the process. When Van Helsing also dances, he accidentally slips and falls, but Dracula saves him. Touched by the act of kindness, Van Helsing apologizes to the monsters and gives everyone a full refund for the cruise, before sending them back.
Back at Hotel Transylvania, Dracula proposes to Ericka, who stammers at the question before accepting.
Nice text