The officer in charge of Team A, CHIN HON-TO, leads the rookies of the Special Duties Unit (SDU)/Flying Tigers together with his current team members to conduct some outdoor training. While there, one team member, YU HOK-LAI, demonstrates how to successfully hop on the roof of the high speeding car driven by his co-worker, CHONG CHEUK-YUEN, from another roof of a moving car by solely depending on his own feeling and trust built between his team members. Having seen this, HOK-LAI's girlfriend, SO MAN-KEUNG, who is also one of the rookies, feels very satisfied. Unfortunately, MAN-KEUNG sprains her ankle while jumping...... Under orders to set out for an operation, HON-TO learns that ON TIN-MING and his three armed henchmen have taken a large amount of civilians hostage at the high court……
