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 and Steph begin looking for a house of their own.
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 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.