Trapped on a spaceship in a repeating time loop, Yuri must uncover which crew member is a hostile shapeshifter and eliminate them before it's too late.

In a world of shapeshifting ravens, Yukiya, a Northern leader's son, is summoned by the Imperial Prince as murder, mysteries and an invasion from an unknown enemy threaten the four noble regions.

Four miserable members of a dysfunctional household have no idea that they've formed a happy family unit in an immersive VR game — with each other.