One Battle After Another is a 2025 American action thriller film written, directed, and produced by Paul Thomas Anderson. Inspired by the 1990 novel Vineland by Thomas Pynchon, the film's ensemble cast includes Leonardo DiCaprio, Sean Penn, Benicio del Toro, Regina Hall, Teyana Taylor, and Chase Infiniti, in her film debut. The film follows a drug-using washed-up former revolutionary who is thrust back into the conflict when an amoral tenacious counterterrorist agent resurfaces after sixteen years to bring them to justice to cover his past sins. Anderson had wanted to adapt Vineland since the early 2000s, and eventually incorporated his own stories into the narrative while writing the screenplay.