The One Crazy Thing In My "Life"

After an embarrassing divorce ceremony, Hyun-woo returns to the single life that he dreamed of and hopes to enjoy his freedom forever. Just six months later, his ex-wife Sun-young comes back into his life, but as the love interest of Sang-chul, an old friend from high school. Now he has to try and escape from her sudden return and avoid his friend who's keen on introducing his new love to his old friend.