The Guelph Storm opened the scoring early in the first period but it was all Owen Sound Attack after that as Guelph fell 4-1 at the Bayshore Community Centre Saturday night.
After Guelph's Noah Carroll had put the Storm up 1-0 with a power play goal, Owen Sound's Petrus Palmu tied it with a shorthanded goal and Santino Centorame would score what would prove to be the winner on the power play late in the first period.
The Attack would add single power play goals in both the second and third periods.
Storm goaltender Michael Giugovaz was the reason the game was even close, making 45 saves in the Guelph net.
The Storm lost winger Givani Smith to a game misconduct early in the first when he undid his helmet strap prior to fighting the Attack's Jacob Friend.
Guelph plays in Kitchener on Tuesday then hosts the Rangers on Friday.