When exotic animal traffickers kidnap talented violinist Yumi, the world of the Singing Forest collapses. Her loyal friend, the smart and brave rabbit Momo, goes in search of a big city full of dangers and unexpected allies. There Momo meets a street kitten, Tenka, and together they go through a series of challenges: from an abandoned factory and warehouse labyrinths to a zoo and a TV studio, they encounter merchants, collectors and guards of luxury mansions. Meanwhile, Yumi, trapped in a cage, attracts people's attention with her talent and quickly becomes a TV star. She faces a choice that will determine everyone's fate: fame or freedom.