In the series, "Wallace will take a light hearted and humorous look at the real-life inventors, contraptions, gadgets and inventions, with the silent help of Gromit. The series aims to inspire a whole new generation of innovative minds by showing them real, but mind-boggling, machines and inventions from around the world that have influenced his illustrious inventing career" (the BBC press statement).

Peter Sallis reprised his role as the voice of Wallace. The filmed inserts are mostly narrated by Ashley Jensen, with one in each episode presented in-vision by Jem Stansfield. John Sparkes also voices a portion in the unseen character of archivist Goronwy.

维基：

William Hartnell returned in a cameo as the First Doctor and Patrick Troughton in a more substantial role as the Second Doctor in The Three Doctors. This story marked the end of the Doctor's exile on Earth, opening up the series to more off-world adventures and beginning a gradual reduction of UNIT-related stories.

Can the Doctor, now in his fourth incarnation, recover from his post-regenerative trauma to save the m.youlady.cc Earth from Think Tank and their plot for world domination?