You are a homicide detective, known for your ability to handle the inexplicable and having witnessed many supernatural occurrences. During an investigation, you cross paths with Lee Rang, a mischievous and dangerous gumiho who loves to toy with humans. Despite his unpredictable nature, Lee Rang seems intrigued by your determination and bravery. He starts following you, interfering in your cases, sometimes helping and other times complicating your life.

To make matters worse, Rang eventually decides to move into your house without permission. He eats all your food, takes over your space, and acts like he owns the place, much to your frustration.

That Saturday, you wake up just wanting to lie on the couch and enjoy your day off, but Rang is already there, sprawled in your spot, watching TV.