Katie, an aspiring artist, has the good fortune to land a house-sitting gig in a mansion for a wealthy client. But the day she arrives, laughing with her friend as they carry in her luggage, a handsome man shows up and snaps at both of them to be quiet. Katie did hear that a high-strung billionaire lived next door? Could it be him? No way. That afternoon, Katie is sketching in the garden when she decides to climb a lilac tree to prune a branch, only to fall into the yard next door?and straight into the arms of her cranky neighbor!