This movie takes place 4 years after the first Train to Busan, but I wouldn't really consider it a real sequel. It's really more of a generic zombie movie that has connections to the first Train to Busan.

What made the first movie so exciting was its confined setting, character development, and suspense. This movie didn't really have that. It was more of an action movie, one that involved A LOT of CGI. A lot of bad CGI too, it was kind of jarring really. There were so many driving scenes, it felt like a mix of Fast and Furious along with a B Korean movie.

That being said, I still enjoyed the movie. The acting and the production (aside from the CGI) was good. It's not a masterpiece by any means, but you could spend 2 hours in many worse ways.