The 0 Section are busy in collecting more information in regard to the kidnapping case. The cops even could not return home during the Chinese Winter Festival. CHUNG identifies the location of the kidnapper through watching the video. However, the kidnapper has bought the kid away when the cops arrive the spot. CHUNG again matches the car plate numbers and the identity card numbers which were recorded near the ransom hand over spots. He eventually finds a suspect, LEE TOMMY. CHUNG even proves that TOMMY is one of the kidnapper. However, the cops dare not to arrest him as the kid is still missing. Later, all he kidnappers' identities are unveiled. CHUNG and the cops start to take action. They find the kid's location. In fact, the kidnappers have sent a letter to SHEUNG soon after received the money. However, SHEUNG misses the letter as he did not return to his office.