Prize Winning Cowbot

After school, Suneo asks Nobita to be the day student to clean up. This makes Nobita unable to go to Shizuka's house to eat cakes. Doraemon has no choice but to take out the "Prize Winning Cowbot" to help Nobita find Suneo to settle the score, and let Gian's mother catch Gian back (Nobita set the prize as bun). However, because Nobita's house has guests (the minister's wife) visiting, Nobita's mother asks Nobita to run errand, and Nobita uses the cake in the refrigerator as a prey for Doraemon, but the cake is eaten by the guest. Afterwards, the Robot Cowboy confronts Nobita. Since Nobita does not set the type of prize, this leads to Nobita's victory on the surface, but Nobita's property is evacuated.