EU Sergeant LING SUN-FUNG leads her EU team members to go on patrol until midnight, and for the sake of her team members' health, she even changes the menu of their meals on her own initiative. In an effort to hunt down suspects, SUN-FUNG leads her team to arrive at a walled village, where they are obstructed by the village chief, KWAN TING-MING, and his men. During the meeting, LEE SIR reports that some security employees were injured by the suspects, and SUN-FUNG reiterates that they would have captured the suspects had they not been obstructed by TING-MING. SUN-FUNG's boyfriend KWOK SHEUNG-CHING intends to propose marriage to SUN-FUNG while walking her home, suddenly, they hear thunder rumble in the sky. The following day happens to be April Fools' Day, so SUN-FUNG's younger brother, SUN-KWONG, carries out the tradition to play a prank on SUN-FUNG.… ...