Description: 

Characters: The main characters are Mary, a young girl, and her pets Mungo, a laid-back dog, and Midge, a perky mouse. Richard Baker narrated the series.

Setting: The series is set in a modern, bustling town, and the characters live in a high-rise apartment block, which was a relatively new concept for children's television at the time.

Plot: Episodes follow Mary, Mungo, and Midge as they explore their world, from the building site next door to a local toy shop. Midge often rides on Mungo's nose to operate the elevator, a recurring motif in the show.

Themes: The show introduced children to various concepts, including technology (like automatic machines and cranes) and everyday activities, framed with a sense of curiosity and wonder. Themes like friendship, honesty, and family are central to the stories.

Animation: Mary, Mungo and Midge used a unique and minimalist cut-out animation technique, which made the characters stand out against plain backgrounds.