Min-ji wrote screen play at her university until mid night. One day, Min-ji hears screams.

Two twin women, a man, a dog, and a letter. Leading their own lives, but sometimes accompanying each other or running away from each other. Some lose their legs, some die. They guessed about each other in the process in which time, space, seasons, lies and facts were mixed up. But, all of their guesses are wrong. Not knowing their whereabouts and themselves with full of unknown ambiguity. But, they move on and on.

Kyung-hak, who has been studying to become a police officer, is forced to pay back his mother’s debt of $20,000. Already struggling and having to work part- time while studying, Kyung-hak is now forced to make big monthly loan payments on top. Eventually, Kyung-hak stops studying and becomes a deliveryman to make ends meet. Meanwhile, cracks start to form in his relationship with his beloved girlfriend Hye-jin.

Vampire Yu-jun and human Jin-ah are in a romantic relationship. Yu-jun survives by feeding on Jin-ah's blood. However, Jin-ah is unhappy with the relationship, as she is the only one who suffers. When Yu-jun's fangs mysteriously stop growing, leaving him unable to feed, Jin-ah seizes the chance to upend their one-sided relationship.