Faith escapes from the plantation where she has lived as a slave all her life. Light enough to pass for white, she disguises herself as a boy and heads north. When soldiers on patrol capture her, their captain discovers they have a female and believes she's the spy he's looking for. Union Captain Matt Winston has orders to watch for a female spy who has escaped many times and never harmed anyone until now. This time she killed an officer, stole battle plans, and fled. Faith isn't sure what to fear most, being caught by slave catchers or executed as a spy. When Matt is hit by a stray bullet while taking her to his commanding officer, Faith has to decide whether to help her enemy-or escape.