The first documentary film in Sunny Day Service’s career, was shot between spring 2020 and fall 2021. The film includes the history and anecdotes of the band on the 30th anniversary of their CD debut, as told by Sunny Day Service members and others involved, as well as rare live performance scenes, some of which are being shown for the first time.

Kazuki Suzumoto is divorced and he lives with his 15-year-old son Kouki. Kouki is in a susceptible time. The father feels guilty about his son. Kouki then fails his high school entrance exam. In the spring of the following year, Kouki barely passes his high school entrance exam. Kouki mentions to Kazuki that he likes his father's lunch box. The father and son make a promise to each other. Kazuki promises that he will make a lunch box everyday for Kouki. Kouki promises that he will never skip school.

This battle action film stars Ichiban Ujigami of the unique rock band "Kabuki Rocks," who perform in costumes inspired by Kabuki. The Ujigami clan has been engaged in fierce battles with the evil Kagerou clan since ancient times. Kabuking Z, a hero of justice and a descendant of the clan, spends his days fighting alongside his younger brother, Yaruking. Eventually, their battle escalates into a major war that involves a mysterious vigilante group and Kabuking Z's younger brother, Yutaro.