A fourth-grader investigates the mysterious reason behind the sudden appearance of penguins in his village, which is somehow related to a power from a young woman working at a dental clinic.

Traveling in search of the rare ingredient, “sky fish” Meliodas and Hawk arrive at a palace that floats above the clouds. The people there are busy preparing a ceremony, meant to protect their home from a ferocious beast that awakens once every 3,000 years. But before the ritual is complete, the Six Knights of Black—a Demon Clan army—removes the seal on the beast, threatening the lives of everyone in the Sky Palace.

A story of encounters and partings interwoven between people; this is a human drama with feelings that touch one's heart gradually, which everyone has experienced at least once.

This movie is a retelling/summary of Selector Infected and Spread, with extra scenes interspersed such as the characters in childhood. Despite mostly being previously used scenes, they were cut and altered to make a high intensity and fast paced story, highlighting the moments of slow silence and reflection. Some changes were made such as the true origin of Tama's name, the significance of Sachi and Rumi, and the relationship between your name and being alone. Written by The An1me God