This is the 2019 summer movie for Kishiryu Sentai Ryusoulger. It is twin-billed with the summer movie for Kamen Rider Zi-Oi: Kamen Rider Zi-O: Over Quartzer!. It will feature the debut of Ryusoul Gattai Kishiryuzin.
Satoshi, who is a high school junior, is doing something against the rules. He is forming a band. Joining him is Rin. They nonetheless perform at the school's cultural festival live in front of their fellow students. There is a mishap and Satoshi travels back in time to the moment when he met Rin.
