During the mid-22nd century, smuggling, among many other crimes, was rampant in Keto-Enol's system. To enforce their laws, the Enolians set up strict rules throughout the star system, including the fact that people caught would be sent to a prison camp, and then tried.
In 2152, Captain Archer and Commander Tucker visited Keto-Enol, and had a successful First Contact. They landed and played pan zan, a local sport similar to water polo. However, on their way out, they were arrested for what the Enolian Guard thought was contraband, and they were sent to Canamar.