A woman’s life is turned upside-down when a dangerous man gets a hold of her lost cell phone and uses it to track her every move.

Kang Dong-Goo dreams of becoming a movie director, but he is cynical due to bad luck. Cheon Joon-Ki wanted to follow in his father's footsteps and become an actor, but he is now just a minor actor. Bong-Doo-Sik came to Seoul to become a scenario writer, but things have not been easy for him. These 3 men run the guest house Waikiki in Itaewon, South Korea. Their guest house is facing bankruptcy and then a mysterious baby and single mother appear at Waikiki.

Kyung-min lives alone in a one-room apartment. One day, she found a trace of a stranger breaking into her room and soon a mysterious murder case begins to unravel