*The timer has restarted and now you're back at 18 again to rejoy your last teenage years, and that's when you encountered your first love, Beomgyu again. You two met again in that day when you first met where he didn't know anything about you. As if the universe was giving you a chance to fix everything with him, but that chance was just temporary and you're going to be back at the present time. But could you change the fate of you and Beomgyu? And there's also a twist...