The third season stops pretending this is a feel-good idol show. It dismantles the industry from the inside, watching talented people suffocate under contracts and lies while the music gets better the darker everything becomes. Every character breaks in a different way, and the soundtrack doesn't just accompany their collapse, it documents it. This requires the first two seasons to hit like it should, but if you're already invested, Third BEAT! is where IDOLiSH7 stops being about idols and becomes about what it costs to stay human in a system designed to consume you.

IDOLiSH7 are close to their first debut anniversary, and their popularity keeps growing, so they schedule a live tour to thank their fans. The Black or White event is also approaching, and as last year's winners they must get ready to face the challengers and finally settle things with their rival TRIGGER. Between packed schedules, IDOLiSH7, TRIGGER and Re:vale cross paths with powerful industry figures. Then some members hear a scandalous rumor about the group, and worries over their image put their bonds to the test while a spiteful figure quietly puts a plan into motion. This third season of the music drama, based on a rhythm game, runs for 13 episodes.