Hannah Martin's Life Isn't Shaping Up Into Much Of Anything. Since Graduating College Eight Years Ago, She Has Lived In Six Different Cities And Held Countless Meaningless Jobs. At The Age Of Twenty-nine, She Is Starting To See Crow's Feet, And Yet, She Still Has No Idea What She Wants To Do With Her Life. On The Heels Of Leaving Yet Another City, Hannah Moves Back To Her Hometown Of Los Angeles To Regroup. She Takes Up Residence In Her Best Friend Gabby's Guest Room. Along With Gabby And Gabby's Husband Mark, The Three Of Them Go Out To A Bar Where They Meet Up With Some Of Hannah And Gabby's Old Friends, Including Hannah's High School Boyfriend, Ethan. Shortly After Midnight, Gabby Asks Hannah If She's Ready To Go. But Then Ethan Offers To Give Her A Ride Later If She Wants To Stay. Hannah Hesitates. What Happens If She Leaves With Gabby? What Happens If She Leaves With Ethan? Maybe In Another Life Is Told In Two Concurrent Storylines Following The Consequences Of Each Choice. Hannah's Two Parallel Universes Develop Into Radically Different Stories With Large-scale Consequences Not Just For Hannah, But For All Of The People In Her Life. As Hannah's Stories Run Their Course, They Raise Questions About Fate And True Love. Is Anything Meant To Be? How Much In Our Life Is Determined By Chance? And Perhaps, Most Compellingly: Is There Such A Thing As A Soul Mate? Hannah Believes There Is. And, In Both Worlds, She Believes She's Found Him--