Who's Who in My Bed?

Twin sisters Jane and Lily mysteriously swap souls. Now, Ethan Walker's wife is living in her younger sister's body. The once distant and reserved wife has become passionate, spontaneous, and even loves surprising him with bold new experiences. Just as Ethan is trying to make sense of the sudden change, he starts noticing something odd: his in-laws and even his brother-in-law are acting differently too. Is this all just a bizarre coincidence… or something more?