Bob (Leonardo DiCaprio) was once a loud and determined revolutionary who believed he could change the world. Now he is a broken man, living in the paranoid shadow of his past, far from civilization, surviving on drugs and a wild lifestyle. His only support is his daughter Willa (Chase Infiniti) - a young, brave and headstrong girl who has learned to rely on herself.
But their fragile world is shattered when Bob's old enemy Steven (Sean Penn) reappears on the scene. Tensions rise, and when Willa suddenly disappears, Bob must muster all his strength and embark on a perilous journey to save her. The search for Willa becomes not only a battle against a real enemy, but also against the demons of his own past.
Directed by Paul Thomas Anderson (MAGNOLIA, THE END OF THE WORLD), One Battle After Another is a gripping tale of family bonds, guilt and redemption - a raw portrait of two generations united by a desire to survive in a harsh world where the past never truly disappears.