Once again, Mackenzie 'Mac' Carter finds herself agreeing to an insane pact with her besties. Only this time, the Best Friends Challenge is sure to end with her barefoot, pregnant, and cursing out anyone within a three foot radius. Doesn’t the universe realize she’s a handful already? Her husband Alexander may be ecstatic to diaper dive into the world of fatherhood, but Mac? Not so much. Nothing says 'I love you' like great sex, even better conversations, and a husband and wife both eager to prove their point.