England started superbly against their old rivals in the World Cup semi-final, dismissing dangermen David Warner and Aaron Finch. "We've tasted defeat and rebuilt from there".
"I think the way that we have gone about our cricket, the way we have gone about playing all our games has been in the right spirit, as has the whole competition".
"We're back to where we want to be", Plunkett told BBC Sport.
"Everyone is excited to play this semi-final. We don't have any extra motivation because of redemption, we are representing our country each and every game and that's enough for us".
Plunkett featured at the 2007 tournament, with the 12 years and 39 days wait for his next World Cup appearance bettered only by Shoaib Malik and Anderson Cummins.
As ticket sales for the World Cup semi-finals had already begun by then, most India fans had already booked for tickets at Edgbaston - the venue of the England-Australia game - as they had all been expecting an England-India clash.More news: Virat Kohli reacts to criticism after Indias World Cup exit
More news: Trent Boult craves revenge and hopes for Australia in World Cup final
More news: Baker makes marijuana birthday cake, it was supposed to be Moana
But Plunkett, 34, says the home side have been battle-hardened by the conclusion to the group stage, when they were playing under the threat of elimination.
"It's a matter of how you deal with pressure, it's not a bad thing that it's there".
Morgan's team face Australia at Edgbaston on Thursday - live on Sky Sports Cricket World Cup from 9.30am - with the opportunity to reach a Lord's final on Sunday.
"Australia is a game that gets the juices flowing".
England were on the brink of going out of the tournament when they lost to Australia at Lord's, their third defeat of the group stage. "We're in a good place", the England fast bowler signed off. We've performed really well in the last two games.
But England responded with impressive wins over India and New Zealand, and Morgan says it's a different team now compared to the one which lost by 64 runs to Australia at Lord's. Even though we were dominant in those games, we feel like we're stepping up a gear as well.