Brand-new treasury agent Kristi Blocker is tasked to find two missing coworkers in the vast Atchafalaya Basin: a swamp larger than Rhode Island.

But after Kristi herself gets kidnapped, things get complicated. Fighting for her life, she escapes to the depths of the swamp. Meanwhile, the Sheriff of St. Mary Parish asks Hawk Theriot - the swamp ranger - to find Kristi. The only federal warden in the Atchafalaya, he knows the area like the back of his hand.

With corrupt cops, private investigators and federal agents all having their own spoon in the same gumbo, can Kristi and Hawk figure out what happened in the swamp, and bring those responsible to justice?