Chris and Pui investigate and explore within their magical playroom in the sky, bring objects and ideas to life. Miss Mouse zooms into the playroom in her shiny fire engine. In no time at all she has inspired Chris, Pui and the toys to join in. After building a fire engine, they have fun doing things a fire fighter might do. Fireteddy Teddington drives around the playroom on his rescue missions and even Incy Wincy spider climbs the fire-engine's ladder.