After miraculously remaining 29 years old for almost eight decades Adaline Bowman (Blake Lively) has lived a solitary existence never allowing herself to get close to anyone who might reveal her secret. But a chance encounter with charismatic philanthropist Ellis Jones (Michiel Huisman) reignites her passion for life and romance. When a weekend with his parents (Harrison Ford and Kathy Baker) threatens to uncover the truth Adaline makes a decision that will change her life forever.