Complex sentence: During the course of the next two films, Andy is never mentioned again so this would be the first film since Child's Play 3 that we find out about what happened to Andy, following the events of Bride and Seed of Chucky.
Split into simpler sentences: During the course of the next two films, Andy is never mentioned again. So this would be the first film since Child's Play 3 that we find out about what happened to Andy, following the events of Bride and Seed of Chucky.