※ This work contains violent scenes. In addition, any illnesses or medical knowledge mentioned have no basis in reality.

Jeongha boards a cruise ship to pay off his father’s debt.

What the debt collectors demanded was that he transport a bag to Macau.

But within just a few days, the ship faces a completely unforeseen crisis.

Infected individuals attack, plunging the vessel into chaos.

In that whirlpool of disaster, Jeongha ends up teaming up with the man who had designated him as his butler.

This man ruthlessly cuts down the infected, once ordinary people.

And the more time Jeongha spends with him, the more suspicious the man becomes.

With Jeongha’s tangled emotions left unresolved, the ship continues to sail across the vast, empty sea.

But the nightmare is only beginning.

“How could something like this happen?”

“…Do you think I know anything about it?”

“Do you really know nothing, Mr. Jeongha?”

Could this man… know something?