It’s the summer after sophomore year and Raina has convinced her best friends since the sixth grade, Kathleen and Holly, to spend their summer as “pink angels” in Parker-Sloan General Hospital’s summer volunteer program. Kathleen is reluctant to do it—she has enough responsibility at home caring for her sick mother. But when she meets Carson, a cute and flirty fellow volunteer, she is happy that she joined the program. Or, at least, she thinks she is. Carson’s “old friend” Stephanie keeps showing up at all the wrong times. And Kathleen’s mother keeps complaining that she needs Kathleen at home. But with friends Raina and Holly by her side and her Pink Angel t-shirt on her back, Kathleen is able to realize that helping others also allows you to help yourself.

Raina is happy and relieved that her friends Kathleen and Holly found volunteering at the hospital rewarding. They loved their summers at the hospital so much they will be working for credit during their junior year. Raina is also looking forward to spending as much time as possible with Hunter during their last year of high school together. Kathleen is still dating Carson, but they are at different schools and she’s worried it won’t last. And poor Holly’s still waiting for her parents to let up on their rules so she can actually go out on a date. Everything is going well until Raina’s old boyfriend Tony shows up and threatens to ruin the thing that matters to Raina the most—her relationship with Hunter. But she isn’t the only one with a secret. When Raina’s mother reveals her family secret, Raina feels betrayed. Luckily she has Holly and Kathleen to lean on.

Pink Angels and best friends Holly, Raina, and Kathleen have been through a lot over the past year. The summer before their senior year promises to be busy but fun, as Holly and Raina return to their full-time volunteer jobs at the hospital, and Kathleen, who needs the money, works at the hospital gift shop. Of course, Raina and Kathleen will be spending as much time as possible with their boyfriends, Hunter and Carson. Holly is happy for her friends, but she can't help feeling a little left out when she's around the two couples. She did finally have a boy interested in her, but the e-mails from her secret admirer, Shy Boy, have recently stopped coming. What did she do wrong? Will she ever meet her mystery guy in person? Then Holly's world is forever changed when tragedy strikes close to home. She, Raina, and Kathleen will need each other now more than ever.