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...
After waking up in the morning, SUN-FUNG finds things turn out to be exactly the same as those that happened on April 1st.
After discovering a hidden camera in the windmill given by TING-MING, LING HOI becomes so angry that he immediately goes to argue with TING-MING.
SUN-FUNG is eager to save LING HOI and alter destiny, but has no idea how to do it...
SUN-FUNG disappears, and SHEUNG-CHING and the others try to reach her by phone but to no avail.
SHEUNG-CHING finds SUN-FUNG's necklace and comes to realise that she has been buried alive.