At the competing Chum Bucket restaurant, Plankton's computer wife Karen reminds him of "Plan Z," an elaborate plot to steal the Krabby Patty secret formula, get rid of Mr. Krabs and take over Bikini Bottom. At night, Plankton carries out the plan by stealing King Neptune's crown and sending it to Shell City. That same night, SpongeBob heads to his favorite ice cream parlor, Goofy Goober’s Ice Cream Party Boat, where he drowns his sorrows in ice cream with his best friend Patrick Star, and wakes up the next morning with a hangover. That same time, King Neptune arrives at the Krusty Krab 2 to kill Mr. Krabs after Plankton framed him for stealing the crown. SpongeBob arrives and bad-mouths Krabs, but upon seeing that his boss's life is at risk, promises Neptune that he will retrieve the crown from Shell City. Neptune orders SpongeBob to return with the crown in exactly six days and freezes Mr. Krabs until then. SpongeBob and Patrick then head off for Shell City in a car shaped like a Krabby Patty called the Patty Wagon.