After annoying all of his friends, SpongeBob decides to pack up his belongings and leave Bikini Bottom forever. A bump on the head causes him to lose his memory, and he finds himself mayor of New Kelp City. When Sandy, Patrick, Mr. Krabs, and Squidward finally find him, it will be up to SpongeBob to either return to his old life with these "strangers," or remain in the city where he's considered a hero.

Tim and his family become very fond of the girl that he and Ginger rescue from the sea, and everyone--or almost everyone--is unhappy when she is taken away by her guardian.

Oh, no! SpongeBob is in a strange new place, and he can't remember who he is! He feels better when someone calls him CheeseHead, but when he's told he can't blow bubbles, CheeseHead gets upset. What can he do to get everyone in town to blow bubbles? Find out in this unforgettable story.