The film contains nine skits made for the Toei Anime Fair. The Tamagotchi in this film don't speak but rather communicate via sounds similar to that of Pokémon Speak. This is unique because all the other anime adaptations of the franchise have the Tamagotchi speak Japanese.

Nanami, Jasmine and Houka, who once fought to bring peace to the world, are now happily married and with children. However, the evil that threatens humanity is immortal, and now they must face a daily struggle to balance their fight as "heroes" and their duty as "mamas". It is their goal to succeed at that struggle and to keep the world safe, becoming the brightest of "glittering mamas". The three thought of the plan to make it happen whilst at a café, but at the same time, Space Shinobu Demost's terrifying plan to invade the Earth moves into action!

Quiet bookworm of the Sailor Senshi Ami takes pride in her studies, but a rival naming himself "Mercurius" is suddenly outscoring her on the national exams. Combine this with a sudden love letter and a youma feeding on Ami's stress over the whole situation, and Sailor Mercury finds herself in a huge pinch.

Gamba, a town mouse with a brave spirit decides to go on an adventure to discover the ocean. On his way, he meets a troubled child mouse, Chuta. He says his family and other mice on a nearby island have been killed by a clan of weasels, led by the terrifying Noroi. Gamba promises to save the island, his family and the other mice. He and his friends team up to defeat the evil Noroi and his clan.