[3] Princess Gonzales (Judy Ann Santos) is a young law graduate who signs up with the National Bureau of Investigation as a rookie agent.

Her dedication to her work is fueled by a desire to find out what happened to her father, who disappeared several years before and presumed dead.

Her performance later earns her an assignment with the NBI's EAGLES (Elite Agents of Government Against Lawless Elements of Society) squad, where she is paired up with veteran agent Ambet Katindig (Robin Padilla) as they handle tough missions.

Although Princess and Ambet's work ethics clash over the course of the series, their bond develops into a relationship by the end.

The show became known for doing the first ever live finale (in 2004) for any drama series on Philippine television behind the rival soap opera of GMA Network Te Amo, Maging Sino Ka Man, which also ended the following week.