Por acaso, Julius (Arnold Schwarzenegger) e Vincent (Danny DeVito) descobrem que são irmãos gêmeos. O primeiro é alto, loiro, calmo, enquanto o segundo é um chalatão baixinho e moreno. Juntos, eles vão ver como a educação em famílias diferentes moldaram suas personalidades opostas.
After being released from prison, small-time con artist Cade tracks down his old girlfriend. When she rebuffs him, he fakes his past in order to get hired as the principal of the school where she teaches, in the hopes of winning her back. Cade soon begins to take a sincere interest in the welfare of his students, and enlists the help of his friend Matthew to break a drug-dealing network that has infested the school.
