In a world where no one exists, but I want to race on the circuit with someone. In a world where civilization has collapsed and nothing remains――. Two girls are searching for fun as they ride their Serow bikes around in this unique bike travel manga, eagerly awaited for its third volume! Yoko and Aiiri receive a message from Yoko's sister and decide to head towards the research academy city of Tsukuba. After extending their journey to Kasumigaura, the two girls head to the "Mobility Resort Motegi" where there is a circuit. There, many bikes are preserved in working condition――.