[1] George wakes up to find a box labeled "surprise" on the desk; it contains a jigsaw puzzle.

Worried, the Man calls Doctor Baker, who comes to the house but is unable to determine the problem so recommends that George should go to the hospital.

The x-ray reveals the puzzle piece lodged in George's stomach, and the Man with the Yellow Hat recognizes it right away.

George meets a nurse named Carol, who takes him to the children's ward, where he spends the night.

In the morning, George's temperature and blood pressure are recorded, and he is given a pill and a shot to put him to sleep, then wheeled into the operating room.

By the time the nurse notices, George is heading down a steep ramp toward the hospital cafeteria.

Meanwhile, some attendants are pushing food carts past the ramp and the mayor is touring the hospital.

At home George finds it to be the puzzle piece he swallowed, he is happy that the doctor and nurse had saved it for them.