Phat is the ultimate 'Relationship Juggler' under the guise of an executive assistant for Sia Wut who has a total of five girlfriends. Phat's main job is to juggler each of the girlfriends and make sure that none of them find out about the other. Nothing is as easy as it seems, especially with the mysterious arrival of Cher; the new female executive assistant who later reveals herself to be an 'Infidelity Detective.'
As Phat's relationship juggling missions becomes more challenging, he employs the help of Pinky; his adopted sister with a performance edge; Jim (a fellow executive assistant) and Captain; who happens to be Foie (Cher's cousin)'s rival.
It's a cat and mouse game between Phat and Cher as their missions often intersect—making it hard to keep their feelings for one another strictly professional. The mission must go on—but will Phat be able to stop himself from developing feelings for the enemy?