As they are allowed through the gate, they enter a stagecoach that takes them to the castle. The episode opens with the gate keeper at Castle Lemongrab checking Princess Bubblegum's passport, and Finn on the phone with Jake who is trying to advise him against doing this dinner with Bubblegum because of his recent break-up with Flame Princess.
Finn is already moving on after his breakup with Flame Princess, and visits Castle Lemongrab with Princess Bubblegum, only to find that things haven't exactly gotten better since their last visit.