Fed up with being single on holidays, two strangers agree to be each other’s platonic plus-ones all year long, only to catch real feelings along the way.

84 years later, a 101-year-old woman named Rose DeWitt Bukater tells the story to her granddaughter Lizzy Calvert, Brock Lovett, Lewis Bodine, Bobby Buell and Anatoly Mikailavich on the Keldysh…