In the three years since the tragic accident Mia barely survived in If I Stay, she and high school ex-boyfriend Adam have lived separate lives on opposite coasts. But then Adam, now the dissatisfied front man of popular LA-based band Collateral Damage, stops over in New York City for one night before kicking off the European leg of his tour. It happens to be the same evening that Mia, now well on her way to becoming a renowned cellist, is performing at Carnegie Hall. Adam buys a ticket, planning to slip in and out, but Mia spots him and for the first time in years they’re face-to-face with each other and their shared past.
When Joshua and Nathalie Sandler's only child, fourteen-year-old Daniel, disappears one day in a town in western Massachusetts, their world changes in an instant. Over the next year, Joshua neglects everything else to search ceaselessly for their son, while Nathalie, a gifted cellist, withdraws into herself, unable to play a note of music.
