Tiffany who have to go to Japan for work, have to leave her sick girlfriend at home. She then asked her American friend Jessica to be Hyoyeon babysitter but she didn't know that Jessica was Hyoyeon bestfriend. When Hyoyeon saw her bestfriend again after a year of no contact, they become distant and Hyoyeon will try anything to renew their friendship. But what she doesn't know is why Jessica leave her on the first place.