Kanade Amamiya is unexpectedly scouted into the idol life by industry icon Haruto Mikami due to his pleasant attitude and capacity to grin even after a long day's labor. He joins the agency D-4 Production, where he meets fellow high school students Shin Oikawa, Junya Sasaki, Itsuki Katagiri, and Chizuru Sawamura, all of whom want to be idols. Kanade accepts this new life, inspired by their tenacity. When they are put together to play at the company's Dream Festival, a fantastic opportunity for his debut arrives. To advance, they must gather Dorika—cards donated by the crowd that idols use to build their stage outfits—and capture the attention of the audience. The road to popularity, however, is a hard one, and the lads must build a relationship.