A nine-year-old girl is being bullied at school. With the help of a penguin psychiatrist, a walrus, and a dachshund, she learns to heal.

Petey Penguin and the Case of Little Lost Lenore tells the story of an eccentric penguin psychiatrist who only treats animals until one day, a nine-year-old little girl who is being bullied at school enters his office and needs help. Petey becomes a bit insecure at first, as he is only accustomed to helping animals. Lenore has bad vision and wears thick lenses; she wears braces on her legs because sometimes she falls when she walks, requiring special gym classes, and is ridiculed by her classmates. She is an odd little girl in pain who learns self-respect and healing from all three animal characters. The penguin doctor learns that he can help humans in the therapeutic process while helping himself. The dialogue between Petey, the dog, and Lenore is therapeutic, humorous, and touching, leading to an endearing ending.