Customs officer Mori and her cross-agency unit inspect a couple denied entry elsewhere. Amidst infighting, Mori quietly makes a chilling discovery.

A bomb threat grounds a flight and GATE24 must screen stranded passengers. When four go missing before a midnight deadline, the team races to find them.

Chaos erupts when a passenger smuggles an animal across the border. Meanwhile, the GATE24 team investigates a suspicious woman and the boy with her.

When South Korean idol group Hi-Fi Un!corn lands in Japan, the GATE24 team races against the clock to track down the band's missing item — and its thief.

When a college student is murdered the day after she arrives in Japan, Mori uncovers clues tying a customs officer to the victim and suspected misconduct.

A man arrives carrying his deceased wife's ashes. Mori notices something strange and begins investigating, while GATE24 also deals with an international drug-smuggling case.

During a storm and power outage, a woman is taken hostage by her ex-boyfriend, who claims her fiancé is a marriage scammer. GATE24 must uncover the truth.

GATE24 suspects that there may be a spy inside the team. At the same time, a mysterious poisoning incident raises fears of a terrorist attack.

A newly formed airport task force overcomes institutional barriers and uses an eccentric officer's extraordinary observational skills to protect Japan's borders from international crimes.

A newly formed airport task force overcomes institutional barriers and uses an eccentric officer's extraordinary observational skills to protect Japan's borders from international crimes.