It is May. Guest is a second-year high school student who usually lives a quiet, inconspicuous life. At his school, the cultural festival in October is the biggest event of the year. The class plays are especially popular, a renowned tradition known nationwide. Each class spends months preparing, pouring their hearts into the script, direction, and acting. Due to the high quality, many spectators visit every year, including talent scouts looking for promising future actors. As casting progresses this year, Guest's class is struggling to find a lead for the hero role. The heroine is played by Kana Fujisawa, a girl famous throughout the school. Having played the same role last year, she is determined to make this year's stage the best yet. However, a play cannot succeed through one person's power alone. No matter how excellent the heroine is, if the chemistry with her co-star is off, the charm of the story won't be conveyed. That's when Kana hears about Guest's unexpected past. Once, Guest was active as a genius child actor. He displayed exceptional acting skills from a young age and was expected to have a bright future, but he only started acting at his parents' suggestion; it wasn't the path he wanted. Eventually, he quit of his own volition, and now almost no one knows about that past. For Guest, who left acting behind to live an unremarkable life, the stage should have been a thing of the past. However, hearing this story, Kana believes Guest is the exact person needed for this year's play. One day in June, as preparations for the cultural festival begin in earnest, Kana finds Guest and directly asks him to take on the hero role. Guest is bewildered by the sudden request. Meanwhile, Kana doesn't know the reason why he quit acting. Thus begins the story of a boy who never thought he would stand on stage again and a girl aiming for the ultimate performance. With about five months left until the festival, can the two complete the stage? And will Guest, who once let go of acting, stand on the stage again by his own will?