Watch The Hangover Part III (2013) HD Full Movie Free on SolarMovie. Watch The Hangover Part III (2013) online free. When one of their own is kidnapped by an angry gangster, the Wolf Pack must track down Mr. Chow, who...When one of their own is kidnapped by an angry gangster, the Wolf Pack must track down Mr. Chow, who has escaped from prison and is on the run.