orologio en CB01 OFFICIAL. Ji-won, who had cut ties with everyone, takes a job at a factory that provides lodging and meals. She finds her roommate Ju-hee, a girl who dances the Tango all the time, both burdensome and intriguing. Ji-won gets involved in Hyun-woo's accident and feels uneasy as she watches Ju-hee try to take all the responsibility herself.