Sam and Billie team up for a brand new series. After the wedding of the century, normal life resumes for the sisters. In Essex, the countdown to Nelly's 5th birthday has begun so Billie is planning her biggest party yet but Nelly has some definite ideas of her own. Billie and Greg decide it's time for the Shepherd household to have a digital detox and wiith Greg's celebrity profile on the rise, the newly weds are booked for their first job together. Over in Hertfordhire, the Faiers-Knightleys talk marriage and baby number three. 18-month-old Rosie surprises her Mum with an extraordinary talent for horse riding and Sam faces her past to tackle a compulsive disorder she has battled with for over twenty years. The sisters set Dad Dave straight after his pre-wedding drama.