When her best friend's cancer returns in the summer of 1987, none of her usual pursuits--surfing, singing, or reading poetry--can keep thirteen-year-old Ava afloat.

Seventeen-year-old Chloe had a plan: work hard, get good grades, and attend a top-tier college. But after she collapses during cross-country practice and is told that she needs a new heart, all her careful preparations are laid to waste. Eight months after her transplant, everything is different. Stuck in summer school with the underachievers, all she wants to do now is grab her surfboard and hit the waves---which is strange, because she wasn't interested...