A love story between the three main characters. Kim Joo Heon is a cold and distant celebrity who doesn't understand anything about love or relationships. His outlook will change when he meets Baek Min Gyeong, a cheerful and radiant woman. At the same time, Tofu is a dog who until now has lived a most mundane life when he mysteriously turns into a human. Tofu used to be the dog of Baek Min Kyung but he turned into an attractive human. He starts to search for a human to protect his master.