Yuto finds somebody playing the piano at night at the university. Attracted by the overwhelming performance, Yuto wants him to join the band as the keyboardist.
Ren and the others are looking for a drummer as their last band member. A young man named Banri Shiroishi presents himself, but they refuse him because he says he only wants to join the band to make money.
Ren and the others are finally set out to sail as "Argonavis". A new song is nearing its completion, the future is looking bright. Yuto suggests having their debut at a live house. The members, riding the wave, look forward to the day of the event and devote themselves to practicing.
Argonavis is asked to be the opening act for the band GYROAXIA. However, Yuto and the rest have differing opinions about it. Yuto firmly rejects the opening act appearance because of a past he doesn't want to talk about.
Argonavis arrives at the Destiny Rock Festival with an intention to experience it from an audience member's point of view. They encounter Mashu, who requests them to perform so they can fill a gap left by another band failing to arrive.
