Coming from a poor family, Stephanie realizes that her mother is very sick, and eventually will pass on to the afterlife. After her one-month, homeless journey, a by-stander takes her in and cares for her, and he goes by the name of Key. After a little while of laughter, love, and care, she gets to know him and his roommates true sides, and she also finds out that her caregiver's best friend is trying to sleep with her, and she's determined to not let it happen, until one day, she gets drunk, and is finally given in. Devastated, both Key and Stephanie don't realize what to do, when they are suddenly faced with an unexplainable situation.