Love Undercover 2: Love Mission (2003)

Frazzled cop Fong Lai Kuen is promoted after her heroic deeds. However, after a series of bumbles, she is nearly kicked off the force after she attacks the VIP she is supposed to be protecting. It turns out the VIP is actually an undercover agent, and Fong Lai Kuen must take her place in order to catch a high-class thief, all while trying to keep her relationship with her boyfriend from falling apart.