Perth and Santa are both elementary school teacher. Santa loves kids so much but Perth doesn't like kids. Even though, he didn't like kids he chose to be a teacher because he wants to follow his boyfriend. The two of them are happy couple however, everything changed after Santa got into a car accident causing him to have a memory loss and suffer from trauma brain injury which reverted his mental state to a 7 years-old-kids. After Perth takes Nong Santa back home, there are days when Perth doesn't get any respite from children.