Mike is a swinging bachelor with a big empty house and plenty of time and money to spend as he likes. But the second he sees Lee in the bar, he knows something’s about to change. He brings Lee home for some hot-tub fun—and plunges headfirst into love. And Lee is right there with him.

But Lee isn’t flying solo. Years ago, he married his best friend Cate so they could please her parents, share a household and have a baby together. Their relationship is strictly platonic, and Cate is thrilled that Lee has found someone. She doesn’t want him to give up his love life to care for her, but she’s living on borrowed time due to a terminal illness.

As Mike discovers passion the likes of which he never knew before Lee, he realizes he needs to step up and think of others for a change. And Lee—and his family—are about to learn what it’s like to have a real-life knight in shining armor.