Thirty-year-old Charlotte Wheelwright seems to have at last found her niche, running an organic gardening business on the island of Nantucket, thanks in large part to her spry grandmother Nona, who donated a portion of land on the family’s seaside compound to get Charlotte started. Though Charlotte’s skill with plants is bringing her success, cultivating something deeper with people—particularly her handsome neighbor Coop—might be more of a challenge.