Danault's junior career was spent largely with Victoriaville, his hometown club in the Quebec Major Junior Hockey League. He excelled there, winning the Guy Carbonneau Trophy as the league's best defensive forward in 2010-11, and scoring 71 points the following season.
That was the good news. The bad news was that the locals had wanted to see Danault in a Montreal Canadiens sweater, but their beloved Canadiens instead selected Nathan Beaulieu with the No. 17 pick in the 2011 NHL Draft. Danault was drafted by the Chicago Blackhawks with the No. 26 pick. Their disappointment, however, wouldn't last long.