Lewis Guy's extra-time goal gave MK Dons a win over top-flight Blackpool in a superb Carling Cup second-round tie.
Sam Baldock fired the Dons ahead from long range in the first minute, with Brett Ormerod levelling on the hour.
Jermaine Easter hit two goals in two minutes shortly after to put the Dons in charge but Ludovic Sylvestre reduced arrears a minute later.
Charlie Adam's penalty forced extra time in which substitute Guy struck the decisive blow with 10 minutes left.
It was a fittingly dramatic conclusion to a hugely entertaining game in which the home side had never been behind but were continually pegged back by their spirited opponents.
It was a much-altered Seasiders side from the one that lost 6-0 at Arsenal on Saturday, with manager Ian Holloway making 10 changes.
Holloway himself was not present to see his second string battle hard but ultimately fail against League One MK Dons - with the Blackpool club website stating he was watching a possible transfer target at another match.
Assistant boss Steve Thompson, standing in for Holloway, had barely taken his seat in the dugout when Baldock collected a Sean O'Hanlon pass and scored from 18 yards after just 53 seconds.
After being second best for much of the first half, Blackpool thought they were level five minutes into the second when Ormerod tapped in after Ishmel Demontagnac had hit the post, but it was ruled out for offside.
However, two minutes later Ormerod did restore parity, heading in a Neil Eardley cross.
That goal was the first of four in an amazing six-minute period, that firstly saw Easter bag a brace via two neat finishes to seemingly give the Dons control before Sylvestre's free-kick to the far post was allowed to go straight in to once again give Blackpool a foothold.
With eight minutes remaining, a melee in the box resulted in a penalty being awarded to Blackpool, which substitute Adam tucked away to level matters.
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