The Greatful Sound festival is on, with Belle Ame on the primary stage, Malcolm (a Sykes-managed rapper) on the second stage, and Beck on the smallest third stage. Veteran Beck members think that if they fail to get more people than the other stages they should retire. Ryusuke mentions that he agreed to the bet because of the dream and then says some harsh words to Chiba, who runs away. The band starts to drift apart, with Taira standing for Chiba, as he goes around the festival site looking for his friend with Koyuki and Saku's help. Eventually, the three remaining band members think of quitting, due to the rain and being unable to find Chiba. Against the odds, Koyuki decides to go up on stage with only an acoustic guitar and starts playing a cover of "I've Got a Feeling" Shortly into the song he is accompanied by Saku; they start to make the crowd sway and flow with the song.

After the band seems to break up before their time on the third stage, the band is slowly reforming just in time to play their hearts out for the growing crowd. Ryuusuke has returned after being given Prudence to play on and Chiba races back to the third stage after thwarting his kidnappers. Meanwhile, the worsening weather forces interruptions at the other two stages, frustrating Eiji and angering Sykes.

As Beck's set finishes up, the reality that it's Beck's last performance finally sets in. Koyuki and Maho realize their love for each other and time goes on and the members of BECK move on with their lives. One month and a half later, Koyuki gets an unexpected phone call from Kazuo Sato, who takes her to a meeting with none other than Sykes, who had seen him perform at Greatful Sound and expresses his desire to produce a solo album for Koyuki, but he politely refuses. With Ryusuke missing, Chiba wanting to assemble his own ramen shop, Taira in another band and the news that Saku will transfer to another school, Koyuki's uneasiness returns day by day, even more so after he and Saku part ways.