One afternoon in San Francisco, Adaline Bowman purchases fake IDs at an apartment before returning home to feed her dog. She then goes to work and opens a box of film reels, which highlight historical events and times. A voiceover ties together the film reels explaining the story of Adaline's life so far. She was the first baby born in San Francisco on New Year's Day of 1908, then later married and gave birth to a daughter, only to become a widow after her husband died in a tragic accident during the construction of the Golden Gate Bridge in 1937. Ten months later, Adaline crashed her car when she swerved into a ravine during a snowstorm and died in the freezing lake nearby, but a lightning strike suddenly revived her. From that moment on, Adaline has stayed physically 29 years old.