Ericka goes to a private and mystery room on the lower decks where she meets Abraham Van Helsing, subtly her extraordinary granddad. Van Helsing has predominantly automated his body to keep away from death, and has an arrangement to dispose of the multitude of beasts: on the voyage's landing in the lost city of Atlantis, he will utilize an Instrument of Destruction in Atlantis' remains. Van Helsing makes Ericka guarantee to not kill Dracula already, however she makes rehashed ineffective endeavors to do so in any case. Dracula's companions hear Ericka grumble about her failure to get him and confuse this as an indication of fondness. Dracula apprehensively asks Ericka out on the town, and she acknowledges since she considers this to be another chance to execute him. As they feast on a remote location, Ericka suddenly starts to become hopelessly enamored with Drac, after they find out about one another's pasts. 

Mavis finds Dracula is keen on Ericka and gets dubious of Ericka's thought processes. The journey transport arrives at Atlantis, which has been changed over into a gambling club; Dracula chooses to come clean with Mavis about Ericka however gets occupied seeing Ericka enter an underground grave. Drac follows her, with Mavis not a long ways behind, and discovers that Ericka is after a "family treasure". With Dracula's assistance, she avoids the booby traps around the item and breaks. Mavis shows up and goes up against them, and Dracula admits that he "hit" with Ericka, amazingly and disarray. After Ericka is determined what a "punch" is, she dismisses Dracula's sentimental emotions, leaving Dracula discouraged. 

A remorseful Ericka gives Van Helsing the article—the Instrument of Destruction—and he designs a snare for the beasts at a party. Seeing that Dracula is as yet discouraged about Ericka, Mavis accepts guidance from Johnny and reveals to her dad to converse with Ericka, conceding that she feared him leaving her, which alleviates Drac's apprehensions. Van Helsing appears and drives away the DJ, and a disheartened Ericka is compelled to uncover that she is his extraordinary granddaughter. Van Helsing discloses the Instrument of Destruction, a case for a music note sheet, and plays a melody that drives a cordial Kraken living close to the island to assault the beasts. Dracula attempts to stop the Kraken, yet gets harmed. Ericka saves Dracula from the Kraken and begs her incredible granddad to stop the obliteration, admitting her adoration for Drac. This maddens Van Helsing, and he assaults them both. 

To conciliate the Kraken, Johnny opens up a versatile DJ unit and plays positive tunes ("Good Vibrations" and "Don't Worry, Be Happy") to beat Van Helsing's tune. After playing the "Macarena," the Kraken is loose and glad for great; Van Helsing can't counter the melody as everybody moves, including the music sheet, which destroys itself during the interaction. At the point when Van Helsing likewise moves, he coincidentally slips and falls, however Dracula saves him. Moved by the thoughtful gesture, Van Helsing apologizes to the beasts and gives everybody a full discount for the journey, prior to sending them back. 

Back at Hotel Transylvania, Dracula proposes to Ericka, who stammers at the inquiry prior to tolerating.