Mom is looking for her shoes. Dad's putting his tie on, but he hasn't seen them. Mom says they were right there. She's in her dress. Dad says they'll be late. Mom says she can't go anywhere without her shoes and asks Dad to help her look. Calvin is hiding the shoes in the closet. He says they're not leaving he and Hobbes with a baby sitter tonight.

The doorbell rings. It's Rosalyn! Calvin goes to the door. He tells Rosalyn that his parents have changed their minds about going out and won't be needing her services. Dad comes out and asks Calvin what he's talking about. Calvin says they can't go out if Mom can't find her shoes. Dad wonders what Calvin knows about that. Calvin looks guilty, says he doesn't know anything and asks if Mom's shoes are missing. Rosalyn asks to be paid in advance.

Calvin is upset Mom and Dad left them with the baby sitter. Hobbes asks if Calvin thinks she remembers how they threatened to flush Rosalyn's notes down the toilet. Calvin laughs, calling it their finest moment. Rosalyn opens the door and tells Calvin to get ready for bed. Calvin protests that it's not even 6:30 yet. In bed, Hobbes says she remembers. Calvin says he's going to call the rescue squad.

Calvin comes down the stairs. Rosalyn asks why he's out of bed. Calvin tells her he heard a thump outside. He wants her to check to make sure it's nothing scary. Rosalyn didn't hear a thump, but she offers to check. Calvin waits behind her, thinking her to go another two steps. Rosalyn looks out the door.

Rosalyn shows Calvin there is nothing outside. Calvin closes the door behind her. He locks the door. He and Hobbes can watch TV and eat cookies until they're sick. Hobbes says this is the best they've ever been baby sat.

Rosalyn yells in for Calvin to let her inside. From the top window, Calvin taunts her by saying there's only a 50% chance of rain. Hobbes notices her trying to open the downstairs windows. Calvin already has locked them. Rosalyn looks in the window and tells Calvin to open the door. Calvin asks what's in Rosalyn's purse and says he's going to look.

Rosalyn yells in that she's going to tell Calvin's parents about this. Calvin yells down for Rosalyn to pipe down. He and Hobbes can hardly hear the TV. Rosalyn says that he isn't supposed to be watching TV. Calvin offers that if she'll go get a VCR and a movie, they'll put the TV near a window so she can watch. Rosalyn shakes the door knob. Calvin asks if she's 18. He wants her to get "Venusian Vampire Vixens".

The phone rings inside the house. Rosalyn hopes it's Calvin's parents. She yells in that she hopes they ask to speak with her. Calvin says it's her boyfriend, Charlie. He offers to say she's indisposed. She wants to talk with Charlie. Calvin asks Chas if he isn't settling for too little in the girlfriend department.

At the restaurant, Mom and Dad are holding hands with wine glasses on the table. Mom says it's nice for them to get out of the house alone together for a change. Dad says it's so nice and quiet, they should do it more often. At home, Rosalyn yells in that she's going to break a window to get in. Calvin, on the phone, tells Chuck that his girlfriend is a psycho. He hopes Charlie isn't making any long-range plans around her.

Calvin and Hobbes are sitting on the floor watching TV. Calvin says this is fun. All the TV shows they aren't allowed to watch and a bag of cookies each. They hear a slam. Calvin wonders what it is. It's Rosalyn! Calvin is horrified and wonders how she got in. Mom and Dad come up behind Rosalyn. Calvin gulps and decides it's past his bedtime.

Mom drags Calvin while he protests that is was a misunderstanding, an innocent mistake. Mom explains that locking Rosalyn out of the house wasn't just mean, it was dangerous. She explains that if he had gotten hurt or there was a fire, Rosalyn wouldn't have been able to help him. She tells Calvin to go apologize. Calvin does. Dad adds that he and Mom are sorry too and assures her Calvin will behave himself next time. Rosalyn says an extra five would help there be a next time.

In bed, Calvin tells Hobbes he got in trouble. Stealing Mom's shoes, making Mom and Dad late, locking Rosalyn out of the house. Calvin says that's a lot to live down for just one evening. He feels pretty bad. Hobbes adds that having eaten a whole package of Oreos doesn't help.