One Pasadena, Calif. house serves as the focal point for three decades worth of marital strife. In 1963, Beth Ann's life as a doting housewife is upended when she learns of her husband Rob's infidelity. In 1984, socialite Simone is blindsided by her husband Karl's devastating secret. In present day, high-powered lawyer Taylor has an open marriage with husband Eli.

Beth Ann's budding friendship with April leaves her feeling conflicted, just as she is beginning to win back Rob's attention. Simone and Tommy get stuck in a precarious situation, leaving Simone to call on an unexpected source - Karl - for help. With Taylor out of town, Eli and Jade's relationship enters new territory when she helps him with his script.

Beth Ann and Rob throw a housewarming party to introduce themselves to the neighborhood, but something seems to be amiss with neighbors Mary and Ralph. Hijinks ensue and secrets come to light when Simone and Karl have dinner with Amy’s conservative future in-laws. Tensions rise in the throuple after Taylor begins to question the living arrangement and reveals a dark truth about Eli.

As Beth Ann plots to remove April from Rob's life for good, a surprising confrontation reveals a secret that will shock Beth Ann to her core. Meanwhile, Naomi is reeling with anger and will do anything to protect her son, even if it means destroying Simone and Karl's reputation along the way.