Will keeping his promise to win back his first love lead to another broken heart? Professor Mikaela Rhoades devises a way to benefit her students' education while helping a family friend on San Juan Island. Launching a new marine biology program involving Cahill Touring-a local whale tour operation in gorgeous Friday Harbor-takes her back to her first love. Now she must face her past and get through the summer and on to her next assignment. Captain Hunter Cahill took over the family business after his father's death. He's grieving and hoping this stodgy professor Mom has lined up will help resurrect the failing business. He's not prepared for Mikaela, his former fiancée, to drop back into his life. Years ago, he promised his father he'd pursue her if she ever returned to the island unattached. The more time they spend together, the easier it is to keep that promise. But, she's still destined to leave. How much will it cost him to spend the summer romancing Mikaela?