内容简介：
In the mid twenty-first century, humankind has begun expansive research on the last great unknown: the oceans. Hidden far beneath the treasure of the Caribbean, Captain Xander Starliper and the crew of the most technologically advanced naval submarine, the USS Magellan are on a research mission in a vast underwater canyon. Upon discovering a strange anomaly, it pulls them in with surprise and force. When they come through, they are shocked to learn that not only have they left the gentle, warm waters of the Caribbean, but the twenty-first century all together. The periscope depth reveals they are in 1492, and a fleet of Viking ships has pillaged Christopher Columbus' ships. Upon launching a search party to explore the new era they are in, they lose their chief security officer, who is taken hostage by the Viking leader and demands surrender of the Magellan. In an effort to save his crew and resume history, Starliper and his crew face a new forbidding enemy that not only threatens their security, but history's as well.