Historians believe they know what happened aboard the Titanic on its doomed voyage that cold April night. However, something far more sinister than an iceberg came for all those aboard that White Star Line vessel.

As the onboard nurse, Nora Ryan was prepared for the common illnesses, what she faces instead is a virus no modern medicine can name. One passenger is dead, dozens more rapidly becoming infected. But death... is only the beginning. Corpses are rising, eager to sink their teeth into any flesh they can find.

Racing against the clock, Nora turns to Gil--a stowaway posing as the baker's assistant--to help her find a way to stop the illness from spreading. The goal is to survive on the ocean liner marked by death.

Can the pair fight back the rising tide of infection before it drags them all under?