Embark on a whimsical adventure with Tamagotchi friends in their debut movie! Mametchi, a renowned inventor on Tamagotchi planet, unveils his latest creation - the Forwarding Machine. However, a mishap orchestrated by the mischievous Kuchipatchi sends a young Earth girl named Tanpopo hurtling into their world. While Tanpopo is delighted to meet her favorite Tamagotchis face-to-face, she soon realizes she's stranded. Determined to help, Mametchi's parents promise to devise a rocket to send her back to Earth at the precise moment she left. In the meantime, Tanpopo relishes her time with Mametchi on Tamagotchi Planet. Yet, unexpected events unfold, thrusting Tanpopo and her newfound friends into a mission beyond her journey home.