Nat and Steph debate who should be the one that goes back to work, and who takes the traditional "stay-at-home-Mum" role.

Nat and Steph are both exhausted and it's beginning to tell on their relationship, Johnny begins to prep the house for the new babies and is accused of being clucky by Lily.

Steph is beginning to panic about how much there is to do before the babies arrive while Nat is more focused on trying to find and enjoy the final moments of peace and quiet.

Nat announces she has booked a babymoon for one last couples weekend before they become a fully fledged family.

Nat is rushed to hospital very much ahead of schedule but seemingly in labour. Steph meets her there and is also in labour.

Nat and Steph navigate the first overwhelming days of bringing their babies home from hospital. While newly dating, Johnny and Lily seem swept up in domestic bliss.

Determined to honour "the deal" and prove she's a trustworthy co-parent, Nat books Steph an appointment with a lactation consultant. Steph's friend and mother make things a bit more complicated.

The boys are going through sleep regression which means no one is getting any sleep. Nat thinks it's time to sleep train the babies, but Steph is adamantly against it.

Steph and Nat seek alternative support at a Rainbow Family community group and end up hosting their new, free spirited friend who introduces some unexpected, flirty competition between them.

Steph struggles with being back at work and separated from the kids, while Nat, determined to prove herself once again, attempts to keep her composure during a tough solo day of parenting.

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Steph and Nat announce their news to their parents with confusing cake, while Lily and Johnny begin to realise the ramifications of having to share the flat with two babies.

Nat and Steph receive the tough news that their latest round of IVF has been unsuccessful and drunkenly decide to take matters into their own hands along with their flatmates Johnny and Lily.

Still in shock at the double pregnancy news, Nat & Steph begin looking for a house of their own and quickly learn leaving the flat will be harder than expected.