Hopping off the school bus, Calvin says he's free. Susie follows Calvin. He notices her behind him and says this walk goes to his house. Susie replies that she knows. Calvin runs and Susie chases him.

Calvin tells Susie her house is the other way. She isn't going to her house. Calvin tells her she can't come to his house. Susie says she has to stay with him until her mom gets home. She says their moms agreed to it. Susie isn't happy about it any more than Calvin is. Calvin informs Susie that she can sit in the yard, but she can't come into the house. Susie contends Calvin's mom didn't say that.

Calvin and Susie are fighting about her waiting in Calvin's house. Susie yells that Calvin won't let him in. Suddenly, Calvin pushes her next to the door. He just remembered a big orange surprise waiting for her. Susie starts to open the door. Calvin runs back away from her.

Susie asks if this is his big orange surprise. Calvin asks if Hobbes didn't pounce on her. Susie hands Hobbes to Calvin, saying he was by the door. Hobbes is wearing a tie. Mom tells Susie to come in. Susie asks if her mom called to say she could come home already. Calvin chastises Hobbes for dressing up for a girl.

Mom offers Susie a snack. Calvin asks Hobbes what he has to say for himself. Hobbes says that when entertaining female friends, one shouldn't look quite as seedy as certain unnamed parties habitually do. Calvin wonders who's entertaining and who looks seedy. Hobbes thinks a spotted tie is just the thing when you're wearing stripes. Calvin asks why Hobbes didn't kill her when she came through the door. Hobbes tells Calvin that if he had made proper introductions, he might have smooched her hand. Calvin reaches toward Hobbes offering to adjust the narrow end of his tie about eight inches.

Calvin walks past Susie all scratched. Susie asks what happened. Calvin says he and Hobbes had a frank exchange of ideas. Calvin asks what she's doing. Susie tells him she wasn't sure she understood a chapter of her school work, so she reviewed her notes from the last chapter and is rereading the book. Calvin asks if she does all that work. Calvin walks away saying he used to think she was smart.

Calvin tells Hobbes that Susie is doing her homework. Hobbes wonders why she doesn't put it off until bedtime. Calvin informs him that she says she needs to get it done so she can practice the piano when she gets home. Hobbes thinks this is like science fiction. Calvin calls it "The Gender From Outer Space".

Calvin calls an emergency meeting of G.R.O.S.S. under a box in his bedroom. Calvin says they've been infiltrated by the enemy who is spreading disinformation that homework ought to be done right after school. Calvin says though Mom has covert girl sympathies, they must eradicate the hostile forces. He asks if there are questions. Hobbes asks if they can put some air holes in the box. Calvin says the box of secrecy must remain secure.

Calvin asks if Hobbes understands the secret plan. He does, but he asks about the secret code. Calvin says the secret plan doesn't need one. Hobbes shows their club charter, which indicates every secret plan needs a secret code. Calvin says the club charter never lies. Hobbes says that's why this is such a great club.

Susie hears Calvin's voice in the closet saying he can't get out. She opens the door and goes in, only to find a tape recorder playing Calvin's message. Calvin and Hobbes slam the closet door shut.

Mom asks if Calvin is slamming doors. He says he didn't hear anything. Inside the closet, Susie is yelling for Calvin to open the door. She calls him a rotten bag of barf. Mom comes in and asks where Susie is. Calvin tells her she may have gone outside. Susie yells to be let out. Calvin acts shocked that Susie is in the closet. Susie tells Mom that Calvin tricked her into the closet and held the door.

Mom tells Susie that her mom is home and she will come pick Susie up. Susie is relieved. Mom angrily says she'll talk to Calvin in a few minutes. Calvin tells Susie not to lock herself in any more closets. Calvin and Hobbes run upstairs. Calvin says some promotions and medals are in order. Hobbes asks if they should get them before they get in trouble or after.