Han Gyeo Wool packs up her bags and moves in with the detectives, to their dismay. With her on the team, they're thrown into a case that they must solve within 24 hours, or else.

The team gets a call from a blind woman who thinks that her brother has been wrongfully convicted of murders to which he has admitted committing. The case unfurls rapidly, and both San and Gyeo Wool just might be connected.