Boys auditioning for the “Hana Doll Project." They all came with dark pasts in mind. They were not the only ones with secrets. The production company that sponsored ask them one condition for passing the audition; In order to "blossom" as perfect idols, the boys have to sign a contract that they will undergo an operation to implant a special “seed” in their bodies in exchange for their lives. There is no one who refuses. "No matter what the cost, I will make my dream come true." Will their determination blossom?