Plot: BadBoy Special Attack is an alternative private detective agency specializing in finding their first love for their clients, and is managed by King (Ekin Cheng) and Jack (Louis Koo), with King's sister Queen (Christine Yeung) as the only employee. The detective agency receives two jobs, one for Taiwan's richest man, Yung Wing-hing, and the other for a young man, Tian Ya (Chen Xiaodong), to find his first love, and strangely enough, the two women turn out to be identical.
What surprises King even more is that his object of desire, Eleven (Shu Qi), is also 100% similar to the two. Is this a coincidence, or are the three women triplets, or is there another hidden secret?
Bad Boy Agent specializes in finding the first love of its customers. King, the manager, is a flirtatious but not nasty lover, and Jack, his partner, is a perfectionist. Taiwan's richest man, Yung Yung Hing, invites them to look for the Asian flyer, Kwan Ching, while a young man, Tien Ngai, comes to look for Shadow, who has disappeared. Interestingly, King and Shadow look very similar to each other. The most bizarre thing is that King meets Eleven, who looks exactly like Shadow and Guanzheng but has lost her memory, and King falls in love with Eleven. In the course of searching for Eleven, the two of them are attacked by a group of mysterious men who are heavily armed and capture Eleven. At the same time, Tin Ai also finds a disfigured Shadow (it turns out that Shadow was captured by a group of Japanese ambitious people, who injected his DNA extracted from Kwan Ching into Shadow, who looks like Kwan Ching, in an attempt to create a perfect human being), but the experiment fails, and Shadow is thus disfigured. But the experiment failed and Shadow was disfigured as a result. Tianya's obsession remains unchanged and he decides to stay with Shadow for the rest of his life.
King and Jack, after realizing the truth, rushed to rescue Eleven, they successfully infiltrated the base and found that there were dozens of women who looked exactly like Shadow, but each of them had their own defects, and their names were all numbers, except for Eleven, who was the most perfect and flawless one. However, this perfect Eleven suddenly goes berserk and wants to kill King and Jack...