A Watertown man is going to prison for a drug-related robbery in Dodge County. Judge Stephan Bauer sentenced 29 year old Tommie Plummer to three and a half years in prison and four years extended supervision. In January a jury found Plummer guilty of robbery and burglary. Plummer was convicted of breaking into a Watertown residence in May 2018, demanding money and marijuana from the resident. Plummer admitted to detectives that he was upset because he was being shorted on drug sales. According to a criminal complaint Plummer said he didn’t understand why a drug dealer would call police about being robbed.