Undercover police officer Gu Shen approaches Shen Mu, heir to a business empire, to investigate a criminal conspiracy. He successfully infiltrates Shen Mu’s circle, only to discover that this seemingly gentle and refined young master has been secretly investigating him, too.
As they go from testing each other to joining forces out of necessity, layer upon layer of secrets about their identities is uncovered and the dark truth comes to light. Only then do they realize that the other is not their enemy, but the only light in the abyss.
