Hears the Truth. Joins the Raid Team.

Gapyeong Ocean Park.

A theme park just over an hour from Seoul by car,

it was once a popular weekend destination thanks to its location near the capital… or so it seemed.

As supernatural phenomena began appearing, visitor numbers dwindled by the day,

and to make matters worse, its owner was caught up in one and went missing. The unfortunate theme park was eventually left to decay before closing for good.

And now.

"A new supernatural phenomenon has manifested at this water park. The Bureau currently suspects it is an encroachment-type, rule-based Gate."

A new supernatural phenomenon had appeared, encroaching upon the abandoned water park.

Kang Yul, who had met up with the others along the way and was listening to Team Leader Myo's briefing,

[Rush-Hour Express Train]...