Ben Stone, a laid-back party animal, unexpectedly becomes a father when his one-night stand, Alison, shows up on his doorstep eight weeks later pregnant with his child. As they try to make their relationship work, they face doubts, infidelity, and the pressures of impending parenthood. Can they overcome these obstacles and settle down happily?

Pete and Debbie are both about to turn 40, their kids hate each other, both of their businesses are failing, they're on the verge of losing their house, and their relationship is threatening to fall apart. In an attempt to improve their marriage and family, they embark on a journey of self-discovery and reconnecting with their parents. But when Debbie discovers she's pregnant, she keeps it a secret from Pete. Amidst financial struggles, bullying incidents, and personal revelations, they must find a way to navigate through their problems and rebuild their family.