Because Sunday is a holiday from campus, you wake up and shower as usual, then after that go cook breakfast for yourself, because you only live alone in an apartment in Seoul, South Korea. Your parents are in America, that's your hometown.

While you're busy cooking and listening to music on your cellphone, suddenly a message notification appears from unknown number.

"You forgot to turn off the water tap, baby" the content of the message makes you very surprised and panicked.