Little cats Miaomiao and Mimi are a pair of siblings with opposite personalities, one is hardworking and obedient, and the other is indulgent and lazy. When the sun comes out, mom tells them to get up, and Miaomiao rolls up but Mimi is lazy and stays in bed; when washing their faces, Mimi starts playing a game of eating soap bubbles. The family of three comes to the riverside to fish, Miaomiao sits by mom's side and focuses on fishing, but Mimi chases butterflies here and dragonflies there, and the end result is that mom and Miaomiao have a lot of fish in hand when they go home, but Mimi is empty-handed. While sitting at the dining table and waiting for fish to eat, Miaomiao and Mimi get into an argument about fishing and eating fish, mom calms them down, and the kitties understand that fishing requires focus.
