KING POK (Raymond Lam) is regarded as the youngest genius in physics and he is appointed as an associate professor in a Hong Kong university. Invited by his good friend LO TIN-HANG (KennethMa), Senior Inspector of Police at Regional Crime Unit, POK assists in cracking many mysterious crime cases and he also meets the policewoman CHUI SIU-LAI (Tavia Yeung) during the process. The rational POK evaluates that he has fallen in love with LAI because of a love hormone called “phenylalanine”. However, owing to the huge difference in their family background and life value, POK fails to tackle their ever-changing relationship problems with formulas.
On the other hand, the romantic and uninhibited HANG has been maintaining a sex only relationship with the journalist LING MAN-KA (BerniceLiu) HANG doesn’t believe in eternity and he is only looking for sensual pleasure in a woman. However, his belief is suddenly shattered when he learns that MAN is going to get married.