Right from the moment she was born, Im Sooha could see numbers floating above people's heads. It isn't until she witnesses the death of her parents that she realizes what those numbers mean. Sooha can see just how long a person is going to live by the amount of numbers left on the personal clocks on top of people's heads.

Every since she was young, 15 year old Byun Mihyun has had the biggest crush on her brother's best friend, 18 year old Oh Sehun. They were neighbours even before Mihyun was born and she has yet to actually have a conversation with him. Now that she is in her freshman year, she can finally have a chance to talk to Sehun at school. Hopefully?