Rookies Amjad and Rosie are keen to build a career as architects. Alex leads the rookies through an incredible experience. The rookies are given stellar advice by Lord Norman Foster, creator of London's Gherkin. They are challenged to design a building to be part of the former Battersea power station redevelopment. They are helped by architect Narinder Sagoo who first takes them off to survey the site to find some inspiration. Then it's back to the drawing board, literally. They find out what is involved working with architects, artists and engineers to realise their design. Finally a 3D-printed model of the building is produced and is used to help present their concept to a panel of architects and experts at the Royal Institute of Architecture.