Samantha and her sister Jessica and their parents are taking a cruise on the Titanic 2, a replica of the original Titanic. But from the first day, the girls notice strange things happening. Their cabin number keeps changing. There are creepy scratching sounds coming from between the walls. And a locket that Jess opened at the museum seems to be following them. Is the locket or ship haunted? Are there ghosts? Why is Sam's sister calling her by another name? Samantha will have to unravel the threads tying her and her sister to the past, or they could go down with the ship!