Ken, an avid fan of the idol group Planet and a dedicated idol enthusiast, encounters a flamboyant salesperson while ordering the latest idol merchandise. To his surprise, this extravagant individual happens to be a student at the school where Ken is employed. Faced with this unexpected revelation, Ken pleads with the student to keep his passion for idols a secret. The student, with a mischievous demeanor, consents to this request but imposes a peculiar condition - Ken must now act as his obedient 'dog' starting from that day forward.