Season 1

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.

After aiding a raid on an illegal casino, GATE24 braces for a drug smuggling tip. Mori raises eyebrows by insisting on inspecting a grieving man's urn.

A record storm and blackout plunge GATE24 into chaos — then a hostage crisis erupts. Meanwhile, Mori suspects a couple's romance may be a marriage scam.

With an influx of crime since GATE24's inception, Mori teams up with Hayami to track down a spy — who they suspect is operating from within the team.

When an assassination plot targets an incoming VIP, the airport goes on high alert. Meanwhile, Hayami and Matsuyama detain a suspicious passenger.

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.