A possible concise summary is:
This is a transcript of a video that contains various segments of animated stories and songs for children. The main characters are the Fixies, small creatures that live inside machines and devices and fix them. The video shows different adventures and lessons that the Fixies have with their human friends, such as learning about cinema, thermos, diamonds, passwords, and magnetic construction sets. The video also has some musical interludes and jokes. The video is meant to be educational and entertaining for young audiences.
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