Hong Kong Customs and Excise Department officers Chow Ching-lai and Cheung Wan-nam share a close mentor-student relationship. On a case involving seized smuggled arms, Ching-lai is sent to take part in a joint operation with Interpol to capture a reclusive arms dealer. However, Wan-nam makes a drastic decision that further complicates the case.
Eva, who returned to singleness, met and liked each other by chance with Thai Red Star Marvel, while Adam still hoped to exchange Eva's 78th forgiveness through hard work. In order to fulfill her terminally ill mother's wish, Eva considered going into marriage. Can Adam take the opportunity to save true love?
