Kindergarten Cop (1990)

After a long time, police officer John Kimble (Arnold Schwarzenegger) is finally able to arrest the dangerous drug dealer Cullen Crisp (Richard Tyson). The most important witness in the trial against the criminal is his ex-wife Rachel (Penelope Ann Miller), who fled with her son Cullen Jr. (Joseph and Christian Cousins) years ago. The trail leads to a kindergarten, where Kimble infiltrates as an undercover kindergarten teacher. He soon realises that the pre-school children demand more from him than some serious criminals. But as a trained police officer, Kimble knows how to command respect. While he tries to track down Crisp's ex-wife and her son, he makes sure the nursery is kept tidy. After all, he wants his little charges to learn something for life.