It isn't a true story. The movie weaves a fictional narrative within the backdrop of Hollywood, drawing from various elements but not adhering to real-life happenings.
Definitely not a true story. It's a work of fiction that combines various elements to create an engaging cinematic experience set in the Hollywood context.
It's a story set in 1969 Los Angeles, revolving around an actor and his stunt double as they navigate the changing landscape of the entertainment industry.
Definitely not true. The movie creates a fictional narrative set against the backdrop of the Hollywood of that time, with elements of drama and imagination added for entertainment.
Once Upon a Time in Hollywood is not based on true events. It's a creation of the director's imagination, though it might draw inspiration from the atmosphere and culture of that time in Hollywood.