In bed at night, Calvin calls for Mom. Dad comes in and asks what's wrong. Calvin doesn't feel good. He says his stomach hurts, and he wants Mom. Dad crawls back in bed, to find Mom curled up with the covers. She asks why her. What's wrong with him, for crying out loud? Dad tells Mom she can ask Calvin. Then he tells her to let him back under the covers.

Mom groggily looks at the clock. She wonders why kids always feel sick at two in the morning. She sits on the edge of the bed, trying to wake up. She says Calvin probably just ate too much dessert. She says if he's going to get her up at that hour, he'd better really be sick. Mom opens her eyes wide when she hears Calvin barf in his room. She puts her arms out and shouts that she didn't mean it. Dad rolls over and tells her to pipe down, he's trying to sleep.

Mom tells Calvin it's been twenty minutes since he was sick, so she takes his temperature. While Mom is waiting, she yawns. With thermometer in mouth, Calvin says "Ig gomfa fome ubhiggin". Mom glances at her watch and asks what he said. Calvin repeats it. She turns around and asks why he didn't say so. She asks for the thermometer and says "Run".

Mom tucks Calvin back to bed and says she thinks the worst is over. She tells him to try to get some sleep. She says she's going back to bed, but that he should call if he feels sick again. Calvin weakly agrees. Mom closes the door and says "Poor little kid". Hobbes disgustedly pushes Calvin over and says there's nothing worse than a sick roommate. He tells Calvin to face the other way.

Calvin says it's scary being sick at night. He wonders what if something is really wrong with him, and they have to take him to the hospital. He gets more worried about having tubes and hoses stuck in him, having an operation, and it being the last night of his life. Hobbes, being kept awake by all this, says he could then look forward to having the bed to himself tomorrow. Calvin says there are few things less comforting than a tiger who's up too late.

The next morning, Mom asks Calvin if he feels better. With eyes nearly closed, he says no. She tells him she better make an appointment with the doctor. He says OK. Mom reminds him it's Saturday, so he won't miss school. He wearily says he knows. Now Mom knows it's for real. She runs to the telephone.

Calvin slowly puts his shirt back on. The doctor tells Mom that Calvin just caught the bug that's going around. He tells her to keep an eye on Calvin and let him know if Calvin isn't feeling better soon. Calvin sleepily walks away. The doctor tells him he was a good patient today. He then tells Mom there's nothing like a little virus to take the edge off a kid. Mom says she'd still rather let his teacher deal with him.

Calvin is lying in bed. He says he gets to stay home from school. He gets to lie in bed, drink tea, and read comic books all day. He says he wishes he could do that every day...like some people he knows. He looks over at Hobbes, who's also in bed with comics.

Calvin wants some more toast. He yells "Room Service". He tells Mom that got her up there real fast. Mom tells him tomorrow, he'll go to school.