An hour long and honestly not too much is going on. I love Michelle Gomez and Missy so much, I think she's the best Master, and I understand that all her character development happens on the show itself. But recently all the Missy stories have been 'Missy gets into hijinks' and this is no different. A steampunk world where technology doesn't work and people fall into by accident is a cool idea, but we haven't spent quite enough time with the characters to care. Hopefully we're building somewhere good though!