For artist Dan Bellamy and his new bride Elaine, a trip on the world's biggest, newest cruise ship represents more than just the honeymoon of a lifetime: it is also a celebration of the progress Dan has made toward beating the agoraphobia that has plagued him since he suffered a horrific knife attack two years earlier.
The ship is a perfect floating paradise, but when Dan spots what he thinks is a body being thrown overboard, he begins to suspect that not everybody aboard the Oceanus is there for a vacation.
Soon, Dan will discover that there are some things worse than murder, and the body he saw is just the beginning. Because something is coming for the passengers on the Oceanus.
Something that isn't supposed to exist...