Plotcheck decided to start a mixed martial arts career and debuted on June 17, 2006. He defeated Wesley "Cabbage" Correira at Rumble On The Rock: Beatdown in less than two minutes by technical knockout because of a cut that Correir suffered during the bout. In his second fight he faced Ikuhisa "The Punk" Minowa at PRIDE Bushido 13 and lost by unanimous decision.