Hemingway volunteers for the Red Cross during World War I; after moving to Paris, Hemingway finds success with his second novel, "A Farewell to Arms."

After achieving literary fame, Hemingway reports on the Spanish Civil War and begins a romance with Martha Gellhorn.

Hemingway tries to start a life with Mary Welsh, but is beset with tragedies; Hemingway publishes "The Old Man and the Sea," but is overcome by his declining mental condition.