In 1928, aboard the Cap Polonio - a lavish transatlantic cruise ship bound for Bueons Aires - Max Costa locks eyes with Mecha Inzunza across the first-class ballroom. They are an unlikely match. He is a thief, sleek and refined, hired to dance with unaccompanied passengers. She is the elegant wife of an accomplished composer. But as they embrace in a fiery tango, a dangerous love affair ignites. Yet as quickly as their affair begins, the two lovers are torn apart. In Nice, 1937, Max and Mecha's lives intersect for a second time and they rekindle their dalliance with ease. But in the wake of a perilous mission gone awry, Mecha looks after her charming paramour until a deadly encounter with a Spanish spy forces Max to flee, leaving Mecha to question if their paths will ever cross again. Decades later in Sorrento at the height of the Cold War, Max once again runs tinto trouble-and Mecha. His opportunity to succumb to their undeniable attraction has arrived at last, but with KGB agents on his trail, the small glimmer of hope is becoming increasingly dim. A mesmerizing tale of love, adventure, and espionage, What we become proves that love, much like a great novel, is timeless and enduring.