The summer after her first year of college, Isobel "Belly" Conklin is faced with a choice between Jeremiah and Conrad Fisher, brothers she has always loved, when Jeremiah proposes marriage and Conrad confesses that he still loves her.

Belly has always lived for the summertime, because summer means all her favorite things: swimming, the beach, and the Fischer boys, Conrad and Jeremiah. For as long as she can remember, she's shared her summers with the brothers at Cousins Beach. And for as long as she can remember, she's been in love with Conrad. Then one summer it seems like he might have feelings for her too -- but so does Jeremiah. As the summer seasons pass, Belly has to choose...

"It used to be that Belly counted the days until summer, until she was back at Cousins Beach with Conrad and Jeremiah. But not this year. Not after Susannah got sick again and Conrad stopped caring. Everything that was right and good has fallen apart, leaving Belly wishing summer would never come. But when Jeremiah calls saying Conrad has disappeared, Belly knows what she must do to make things right again. And it can only happen back at the beach...