The town of Hades, named after the Greek God, Hades (King of the underworld and the dead and god of regret), is one mysterious town. Curious, unexplainable things happen, but no one questions anything. Weird things will stop happening...eventually. 

The most known Haddie (name for a person who lives in Hades) in town, Tiffany Hwang, comes to the rescue.

She is the reason why these things happen. Because she is the sole reason, she takes on the responsibility to stop them.

Tiffany Hwang is a mute, but she is able to see the Unsettled. She deals with them and helps them move on to the Other Side, but she runs into trouble sometimes.

The Unsettled are dead people who cannot move on until their business is settled. There are two types: The Willing and the Troublemaker.

The Willing will usually have a simple request and will willingly move on to the Other Side. The Troublemaker, however, does have some unfinished business in the real world but chooses to prolong their stay until they are ready to move on.

The Living, as simple as it is, are people who are alive and belong to the real world.

What happens when Kim Taeyeon drops (literally) into town? This woman will turn Tiffany's world upside down and be the biggest mystery Tiffany has ever encountered.

KEEP YOUR EYES AND EARS OPEN.