In 1959, a man stepped off a plane in Tokyo's Haneda airport claiming to be from a country that does not exist.

A country called Taured.

An anomaly in reality. An impossible country.

The matter disappeared from headlines, and over many years was buried in cultural history, destined to be forgotten. Until one fateful day, fifty years later, when an unscheduled aircraft arrives in 21st Century Haneda, claiming to have taken off from Taured airport.

Miyu Kinasaki, a student travelling home from break, didn't expect to get caught up in this twisted world of secrets and lies on her way home. But with two worlds colliding and herself dragged into it, can she solve the mystery of the Counter Incursion Operatives and this flight that should not exist?

The clock is ticking.