Season 1 follows a single interior designer from Newport Beach, California who meets a charming doctor. Their instant connection turns into a whirlwind romance, but her daughters become suspicious of the new relationship. The doctor's lies and psychological manipulation result in horrific consequences for the whole family.

Season 2 spans from the 1960s to the 1980s, telling the story of a couple's marriage and eventual divorce through a sprawling tale of love, betrayal, and death.