Mark Tuan Next Door

Tuan had finished his scholarship at Australia and he moved into the house that his parents bought for him before they left for work at oversaeas. There, he meet a beautiful young lady named Kim So-Eun and her quiet but cheerful and outgoing younger sister named Kim Eun-Hee as his neighbours. Eun-Hee may look cheerful and outgoing on the outside but there is actually something dark hidden and happening behind the closed doors of her house and Mark Tuan is going to find out what that is and help her get through it.