High Quality Content by WIKIPEDIA articles! In a Heartbeat is a Disney Channel Original Series inspired by real life EMT squads whose staff consists of high school students located all over the country that premiered in 2000 and ran from 2000-2001. The series follows the lives of several teenagers who volunteer as part-time EMTs while going to school and trying to maintain their lives as normal teenagers. In Canada, the series was aired on Family while in the United States it was aired on the Disney Channel. The series is based on Post 53, a real EMT emergency response program run by high school students in Darien, CT; one of the only organizations in the world to have high school students be first-response EMTs. This was the second Disney Channel Original Series not to reach 65 episodes.