Kirstie and the team help Hannah and Andy from Bedfordshire, whose maxed-out mortgage means cash is in short supply for making a functioning family room, a sewing studio for hobbyist Hannah, and a man cave where Andy can work from home.
Also visiting Kirstie's store are married first-time buyers Arfa and Salim. They have a sitting room furnished with just a rug and four cushions. But Arfa is dead against second hand. Can the team convince them otherwise?
Kirstie comes to the rescue of Louise, whose first-time flat purchase has turned into such a money pit that she's moved back in with her parents, renting out the flat's only habitable bedroom to cover the mortgage.
Young lovebirds Ferne and Peter have only kitted out the bedroom in their new home so far and need to get cracking on the rest of their flat.
And Kirstie discovers ways to decorate on the cheap when she visits a Somerset cottage owned by film set designers.
Kirstie Allsopp helps transform Emma and Darren's home in Worcester - which is a bit of an 80s time warp - into a colourful family home. The team helps transform an old kitchen and a sitting and dining room that has seen better days.
The team also help Angela Stephenson, who has devoted everything to her children and left herself with a bedroom that's falling apart.
Kirstie helps young couple Christine and Chris furnish their first time buy - a tenement flat in Glasgow. Graphic Designer Chris has some out-there ideas, so it's up to Kirstie and co to bring them into line and match what's achievable.
Single mum-of-two Helen Wade has moved back to the UK after spending the last 14 years in France, and wants to turn her bedroom into a lovely sanctuary for herself but also a workspace.
Kirstie sets out to help Samantha from Eastbourne, who wants to give her local authority flat some personality. However, she'll only have free goods that look new, and she knows exactly what she wants.
The team also head to Wales to help Stacey and Dave from Wrexham, who need a new kitchen - which is the hardest room in the house to furnish for free.
Repurpose specialist Charis demonstrates how to bag a Belfast sink at no cost, and furniture hacker Max proudly creates a free mixer tap and a whole kitchen island, saving hundreds of pounds.
In west London, Kirstie helps single mum Jasbinder create a family bathroom and a shared bedroom for two girls with polar opposite tastes.
In Windsor, Kirstie and Charis help a family hit by recent flooding to create a fantastic graffiti-inspired bedroom for a teenager.
After challenging the nation to fill their houses for free, Kirstie Allsopp conducts a room by room guide to some of her favourite decorative transformations and creative upcycles