One evening, Eun-Kyung is mugged. By chance of fate, the famous Korean boyband Big Bang witnesses the attack and decides to jump in and save the day. By the time they get there, though, Eun-Kyung has already been knocked out, and they couldn't just leave her there! They take her home with them, having no other option to keep the poor, unknown girl safe. From there, Eun-Kyung falls into a world that she could never imagine she would ever get to be part of.