I bet you mean "Save the Cat!: The Last Book on Screenwriting You'll Ever Need", its such a cancerous guide.
Most stories are written around the same small groups:
- Single protagonist
- Duo or buddies
- 3 person team (heavy hitter, smart/tech/engineer, leader)
- 5 person team (usually a 3 person team core with 2 additional members)
It's like "madlibbing" a story - using characters named "heavy", "tech", "leader", any IP can slot in their characters. For these, Teal'c/Carter/O'Neill or Raphael/Donatello/Leonardo or Hulk/Stark/Rogers.
Some plots will naturally be more widely adaptable to multiple IPs than others. Any hero can be used to tell a sufficiently generic story, but not all heroes work in all stories. Imagine doing Man of Steel in the MCU, or Infinity War in the DCEU.
These roles are well-defined in modern literature, and it logically follows that a market must exist, to buy and sell stories and IPs. This allows a video production company to license plots and characters, combine them (insert hero A into slot Tech), and sell edited videos of the production.
When they come up with a guarantee that I can access my digital purchases forever from any corner of the world or solar system, then I'll consider buying digitally from the movie/music industry.