From the Steam Store page:
Follow a gripping, surprise-filled journey as two dissimilar characters form an uneasy partnership in order to survive through a perilous, post-apocalyptic America.

150 years in the future, war and destruction have left the world in ruins with few humans remaining and nature having reclaimed the world. Mysterious slave ships harvest the dwindling population and take them out west, never to return.

Trip, a technologically savvy young woman has been imprisoned by a slave ship but manages to escape using her mental prowess. Monkey, a strong, brutish loner and fellow prisoner also gets free by virtue of his raw power and brawn. Trip quickly realizes that Monkey is her ticket to freedom and is her only hope to survive her perilous journey back home. She hacks a slave headband and fits it on Monkey, linking them together. If she dies, he dies and her journey has now become his. ENSLAVED centers on the complex relationship between the two main characters. Players take on the role of Monkey, utilizing a mix of combat, strategy and environmental traversal to ensure he and Trip survive the threats and obstacles that stand in the way of their freedom.