Sheffield Wednesday posted their fourth win on the bounce and inflicted a maiden home defeat on MK Dons along the way.
A Neil Mellor hat-trick - his second in three games - and Luke Chadwick's own goal handed the points to the Owls, who came from behind to seal victory after Mark Carrington struck first for the Dons.
With first choice goalkeeper Nicky Weaver absent through injury, youngster Arron Jameson was thrust into the limelight to make his first senior start.
But after just six minutes of his debut, Jameson was picking the ball out of the net. Wednesday failed to clear their lines and the ball fell invitingly for Carrington to bury low and hard and give the Dons the perfect start.
Clinton Morrison and Mellor linked up well at the other end a minute later as the Owls looked for an instant response but David Martin was off his line sharply to thwart the danger.
Tommy Miller then side-footed narrowly wide before Jameson received a major confidence boost with a stunning save from Carrington's long ranger.
Play then headed back to the hosts' half and Wednesday came within a whisker of drawing level on the 20-minute mark.
Tommy Spurr whipped in a teasing cross from the left from which Morrison connected but Martin got the merest of touches to deflect wide for a corner.
The Owls were not to be denied, though, and restored parity on 22 minutes. Chris Sedgwick did well to find Morrison, who returned the ball to the ex-Preston man and the wideman sent an accurate feed into the box for Mellor to head beyond the despairing Martin.
And just five minutes later, Wednesday were in front. Mellor found space in the area to take Gary Teale's dinked pass and the striker's cross was inadvertently put into his own goal by Chadwick.
The Dons' woes increased on the half-hour when striker Sam Baldock succumbed to injury. Lewis Guy came on as a like for like replacement.
But Wednesday continued to ask most of the questions - with the impressive Mellor at the hub - although Jameson was called into action close to half time with an athletic tip over the bar from Peter Leven's rasping drive.
After a tepid opening to the second half, the Dons threatened on the hour when Guy got in behind the Owls' backline but miscued right in front of goal.
Jameson parried to safety from the same player as Karl Robinson's side upped the ante but for all the Dons' positive approach play, there was little end product to trouble the visitors.
Wednesday were forced to play deep, with the benefit being that Dons were vulnerable on the break and they almost paid the price on 68 minutes.
Morrison found the rapidly advancing Teale with a defence-splitting pass and only a superb last-ditch tackle from Danny Woodards prevented the Owls extending their lead.
But two minutes later, they did exactly that. Teale turned provider, planting a perfect cross on to the head of Mellor, who made no mistake from six yards.
Dons sent on Aaron Wilbraham and Jemal Johnson in a late bid to salvage something from the game but the only action continued to unfold in their own half.
And with seven minutes to go, Mellor duly completed his treble, climbing high in the six-yard box to glance a firm header past Martin and seal three more points for Wednesday.
Mk Dons: Martin, Lewington, Kouo_Doumbe, Gleeson, Baldock (Guy 30), Carrington, Woodwards, Ibehre, McIndoe (Johnson 74), Leven, Chadwick (Wilbraham 74)
Unused substitutes: MacKenzie, O'Hanlon, Gueret, Chicksen
Owls: Jameson, Buxton, Purse, Beevers, Spurr, Teale, Miller (Palmer 87), Potter, Sedgwick (Tudgay 83), Mellor (Heffernan 87), Morrison
Unused substitutes: O'Donnell, Hinds, Jones, Johnson