Manhole

For much of his life, Bong Pil (Kim Jae Joong) has been a slacker: after giving up on his aspirations of becoming a track athlete, he skipped going to college, and has spent the past three years halfheartedly studying for the civil service exam while living off his parents’ money. His longtime friend Soo Jin (Uie), however, has lived a normal life, and is about to be married in a week. Bong Pil is despondent, as he’s secretly loved Soo Jin for years, but never told her about his feelings. However, when Bong Pil accidentally slips into a manhole one day, he somehow travels back in time, allowing him to make changes that affect his life in the present day. Will this mysterious manhole help Bong Pil turn his life around and win Soo Jin's heart before it's too late?