Northern Lights Insurance has a team of insurance investigators. Funny and talkative Boss Keung is the team leader. His three team members are: To Sum Yu, daughter of a rich family; Bak Tin Ming, an affectionate guy; and Cheung Tung, a retired cop. They each have their forte. They have earned themselves a stellar reputation in the realm of insurance investigations as they can always unravel the intricacies and find the truth no matter how nasty, dangerous or outrageous the case maybe. Even though almost 90% of the cases they handle end up with the insurance company having to cough up, their mission is to get the bottom of the matter while maintaining fairness, impartially and righteousness. The three investigators are like special agents, conducting cross-border investigations, searching for clues, following targets and gathering evidence. At the same time, they unintentionally become involved many people's stories and become their guardian angel. (Source: TVB Anywhere; Casual TVB)