Far from his native monastery, the sister of the Agenta wanders on board an ancient pilgrimage ship, carrying the good light in the endless darkness of space. However, after the captain responds to a mysterious distress signal, she has to deal with things much worse than the ignorance of the students - plague zombies flood the ship, sowing bloody devastation in the ranks of the righteous. Agent's only hope, trapped on the lower decks and surrounded by doom on all sides, lurks in a mysterious black object found at a group of refugees... But will it help, and what will remain of the ship and passengers after the artifacts come to the call?