I Caught a Sea Monster / The House Became a Robot

Nobita is going to Shizuka's house to study, but along the way, Gian forces him to house-sit for him. Both Doraemon and Shizuka goes looking for Nobita, and hears him crying in Gian's house. Doraemon turns the house into a robot with the use of House Robot Gadget, and starts cleaning the house. Shizuka returns to find the house clean, and the house prepares the place for studying. A man comes by and threatens them and makes a mess, the house attacks him and cleans it up, forcing him to flee terrified. Nobita, Shizuka, and Doraemon run out to play. Gian saw them and asks why the they're leaving, and they reply the house can take care of itself. Gian goes home, is impressed, and plans on messing around, but the house throws him out. He goes to both Shizuka and Suneo's house, but they won't let him in. He stays outside after the house has forbid him to enter. When it rains hard, the house protects him from the rain after Gian showing careness by fixing the roof's water gutter. The house welcomes him back home along with Gian apologizing for messing around earlier.