Out in the Wild West, there is a small town called San Mar Valley. When a devious ex-criminal attempts one final heist, a domino effect of everyone's dark pasts come to light, are more entwined than they thought, and might just be the missing pieces they'll need to win and stop the biggest fugitive of the West for good. Welcome to San Mar Valley.

A young woman decides to live in a Western-style Korean town where many colorful characters await her company, but with a certain unresolved threat traps her in a situation she didn't ask for, will she be able to maintain her blooming friendships and possibility of romance?