Mari doesn't want these vegetable sprites haunting her, but they're not going anywhere until she stops choking down her food like it's poison. The movie treats her disgust as real, not something to laugh at, then lets her discover these three aren't punishments, they're just trying to help. By the end you're rooting for a kid and three talking peppers to figure it out together, and that's exactly enough.
Mari's relationship with vegetables and milk is nothing short of warfare. She despises them so much that her nightmares are populated by force-feeding scenarios. One day at school, she forces down the despised foods and promptly passes out cold. When she comes to in the nurse's office, three peculiar beings greet her: Ninninman, Piman, and Milk. These are food sprites, and they've materialized specifically because Mari consumed what she hates most. They're here to stay, appearing whenever she eats her vegetables and drinks her milk, whether she likes it or not. Mari wants nothing to do with these persistent spirits. But the three aren't interested in leaving. What begins as an unwanted haunting gradually transforms into something unexpected. Through their strange companionship, Mari starts discovering that these creatures aren't just annoying reminders of her dietary obligations. They're here to show her that finishing your meals connects to something bigger than just nutrition. Friendship, it turns out, comes in surprising forms, and sometimes it tastes like vegetables.