YIP and LUNG are kidnapped by TAI and KIN. With the clues left by LUNG, YI knows that they are locked up in Sai Kung. TAI and KIN run away as they find YUNG and YI finding their refuge. YIP and LUNG are saved. YUNG leads his colleagues to arrest TAl.KIN and TIN suddenly feel sick together. They leave the team. TIN thinks that he has cancer. KWAN worries about him. The magazine receives a letter accusing YIP having betrayed his friend KEI. CHIT asks YIP. YIP is angry. CHIT's car is trashed and LUNG suspects YIP. YIP is angry. YIU accompanies YIP to see the doctor. YIP locks himself up in the study immediately after he has returned home. Then he vanishes.