Adopted teenager Sara goes in search of her birth mother Abby, only to find the woman in prison for bank robbery and manslaughter. In an upcoming parole hearing, Sara helps Abby win release, and decides to spend the summer with her before leaving for college. But Sara soon finds herself in danger as her mother returns to her former partner in crime....

In the cold, dark waters off North Korea a U.S. Navy fast attack submarine meets with a mysterious disaster - it's attacked and nearly sunk by an ominous stealth submarine resulting in the deaths of the Executive Officer and the Engineering Officer.