Drafted in the 4th round of the 1975 NHL Amateur Draft, 80th overall by the Flames from the St. Catharines Blackhawks, Plett played in 4 games with the Flames in 1975-76 before being sent down to the Tulsa Oilers to further develop. There, he found a man who perfectly understood his style in former NHL enforcer Orland Kurtenbach.