One day, a 29-year-old man traps as a 19-year-old young student, an extra character inside the novel that his ‘Sunbae (Senior)’ was writing and receives a mission—to make Cha Yeonwoon happy within 300 days—otherwise, death will be his penalty. Will he be able to survive, to protect his loved ones and fulfill his mission

《Universe Ticket》的续集男团篇，2011年前出生的少年报名。本季主持想法是借鉴了体育联盟，所有参赛者将被分为3队。各队负责人均已揭晓，预计将担任评委和导师。