Two women, Nic and Jules, brought a son and daughter into the world through artificial insemination. When one of their children reaches age, both kids go behind their mothers’ backs to meet with the donor. Life becomes so much more interesting when the father, two mothers and children start to become attached to each other.

Laurel Canyon focuses on Sam and Alex, a pair of upper-middle class lovebirds from the East Coast who relocate to Los Angeles. Enter Jane, Sam’s estranged mother, a successful record producer, who’s more than willing to put the couple up in her lavish digs. As Sam and Alex settle in at Jane’s, they gradually lose their straight-and-narrow approach to life and begin to experiment.

The story focuses on a middle-school math teacher Olive and her relationship with Henry which spans 25 years over the four parts. It is based on Elizabeth Strout’s Pulitzer Prize-winning novel.