Spin-off is a film or book that develops images and themes of a popular and popular work, often due to a more detailed disclosure of one of the episodes or side storylines in the already known, "basic" work.
In translation from English, spin means "rotation, unwinding," and the suffix -off hints at distance, the development of the topic. So spin-off can be safely translated as a "film-offshoot".
Examples of spin-offs:
Cartoon "Cat in Boots" is the spin-off of "Shrek", and "Penguins of Madagascar" are the spin-off of the famous cartoon "Madagascar".