The upcoming Star Festival, a yearly celebration honoring the stars that support existence, coincides with Anpanman's unexpected discovery of an abandoned doll. After receiving a revitalizing boost from a Life Star, Dolly, as the doll is now called, finds joy in all forms of entertainment, convinced that merrymaking embodies the essence of life. Sadly, Dolly's Life Star fades with time, prompting Baikinman to construct a massive robot inspired by his own creation.