Lucas Scott, a world-renowned microbiologist, is desperate to find a cure for the butterfly flu before it spreads. Hounded by the media, he escapes to his houseboat in Santa Barbara where he meets a vivacious veterinarian with a penchant for taking in strays. While he searches for the key to unlocking the butterfly flu, Becca somehow unlocks his analytical heart.
Becca Lee isn't impressed with her new neighbor. His clothes are constantly wrinkled and he's grumpier than a cat with digestive problems. However, Luke isn't easy to brush off. He's always around, has a magnificent mind, and is full of surprises. But, what she can't figure out is why her instincts tell her to trust this rouge billionaire. It doesn't take long to realize he is the only one alive who can save the world and Becca has to make a choice--open her heart or watch Luke sail off into the sunset.