It's a plot of a villian named Chaos, a mysterious liquid lifeform who was released from the Master Emerald by Dr. Eggman. Eggman planned that if he gave Chaos the seven Chaos Emeralds, he would become a powerful monster. Together they would destroy Station Square and turn it into Robotnikland. So it's up to Sonic to save the day.
10 years earlier 10 years later 80s action Adaptation adventure Animation Based on Animated Series based on book based on comic based on comic book based on tv series Based on video game batman biopic Book comedy comic adaptation comic book crime Crossover DC DC Comics Disney drama family fantasy History horror Idea-for-TV kids Live Action martial arts Marvel Marvel Comics Musical mystery reboot remake romance Sci Fi sci-fi science fiction scifi Sequel Superhero supervillain suspense teens thriller videogame adaptation war western