The security check process for checked-in luggage at the airport was not the same as the security check process for carry-on luggage.

Carry-on luggage was carried through the security check by the guests themselves. In contrast, the checked-in luggage was sent through a conveyor belt to a special place for security check after the check-in and check-in procedures were completed.

At this time, Elaine was still unaware of what was going to happen next.

After she had checked in both suitcases,