In a building with multiple cells and control rooms, someone is playing puppet-master with a group of captives. These total strangers—who seem to have nothing in common—quickly realize they’re being watched and heard, and turned into pawns in a dangerous game. As they come to understand that they can’t count on outside help, they decide to start working together to survive and regain their freedom.

A group of strangers must come together to solve the puzzle of their lives.

In a social and cynical context, the series revolves around Maemon, a very stingy man who has a wife and four kids whom he deprives of everything. After they all leave him, they discover that he's a billionaire. They then start a journey of finding his hidden wealth and how to get hold of it.

Shi Qi (Ke Ying) is a talented and good-natured artist who, during one of her painting assignments, learns of an affair between the chancellor’s cruel and exploitative daughter, Shen Qin (Kay Song), and the ruler of the realm, King Ning (Wang Ze Xuan). Shen Qin, however, is engaged to marry the powerful general Xiao Han Sheng (Ryan Cheng). But when Shi Qi accidentally witnesses deadly and nefarious goings-on at the court, she finds herself drawn into trouble. Shen Qin devises a way to enlist a magician to swap her face with that of Shi Qi – so that she and the painter can “switch” identities. As such, Shi Qi ends up “engaged” to Xiao Han Sheng, while Shen Qin takes up the painter’s identity. But the “real” Shi Qi has already crossed paths with Xiao Han Sheng many years ago – even though he has no idea who she truly “is” now.