Sandy goes away to a science convention in Texas and is coming back. So SpongeBob and Patrick decide to throw a surprise party for her. Everything goes well... until Sandy discovers she has a flea. Patrick wakes up at SpongeBob's house from a party they had last night. Patrick sees a donut in SpongeBob's hand and takes it. But Patrick then has a guilty conscience about taking the donut. It is closing time at the Krusty Krab and everyone is ready to go, until Mr. Krabs discovers a plate with a spot on it. So SpongeBob stays to get it off, but it doesn't come off that easily.