In the late 1940s, a murderous couple known as the 'The Lonely Hearts Killers' kills close to a dozen people. Two detectives try to nab the duo who find their targets via the personals in the paper.
Baron, an imprisoned man, strikes up a friendship with cellmate Otis. As the pair hatch an escape plan together, Baron recalls the story of how he met Marmalade, the love of his life, and their Bonnie and Clyde scheme to rob a bank in order to care for his sick mother and give the couple the life they’ve always dreamed of.
An outlaw is rescued from death by a nun who is traveling through the Badlands. She nurses him back to health in exchange for him guiding her to a Church in Williston. A deep friendship develops between these two unlikely people as they learn to work together to survive their dangerous journey.
