When Kara's, husband is shot and killed in front of her in what she's told is a random act of violence, she becomes convinced the world is unsafe. Her life is quiet and predictable until she wins a Caribbean cruise for two and takes along her best friend. On her trip, she meets Nate, a scuba dive instructor, and marine. He'll teach her to face her fear of deep water and teach her to snorkel. Will Kara learn to trust him with her heart, when she fears this shipboard romance will reach an end and she'll never see him again, leaving her broken-hearted? When Kara's boss shows up at their first port of call unexpectedly, Nate's protective nature comes out. Her creepy boss becomes more aggressive after she returns to Ohio and when she calls Nate he gets on the first plane. Can Nate rescue her?