
The film tells the story of young people who grew up around a 330-year-old fireworks factory that is about to be forcibly evicted. Keitarō has shut himself in the factory for four years to perfect the legendary "Shuhari" firework in place of his absent father. Meanwhile, his childhood friend Kaoru, who left her home due to an incident and has been living in Tokyo, visits Keitarō. In their reunion, the two hatch a surprising plan to find the secret of the long-lost firework.

The story of EGUMI LEGACY is set on the remote island of Egu, where the inhabitants sole means of entertainment comes from listening to the beautiful singing voice of the diva known as “End of the World”. However, the sudden disappearance of End of the World plunges Egu Island into a whirlpool of anger, anxiety, and suspicion as the residents begin to scheme and set their own plans into motion. Against this backdrop, the legendary “Egumi Legacy” holds the key to finding End of the World and putting an end to “The Great Licking War”.