SpongeBob is so focused on defeating the Dirty Bubble in a paddleball challenge that he forgets to feed his pet snail, Gary, for a whole week! So Gary decides it's time to pack his bag and find a new home. While Gary is being pampered by sweet Grandma, SpongeBob is posting 'Lost Snail' signs all over town. Soon Gary becomes suspicious that Grandma is after more than just his happiness. Can SpongeBob save Gary before it's too late?