The 20-year-old Londoner travelled to Scotland for the first time on Friday to commence his six-month loan deal from the English giants, just 24 hours before making his debut in the Scottish Communities League Cup semi-final against Inverness at Easter Road.
The tall striker became an instant Gorgie hero by scoring the equaliser that took the game to a penalty shoot-out and scored from the spot to help set up a March 17 final meeting with St Mirren at Hampden.
He recalled how watching Hearts scrap out a 1-1 draw with Liverpool at Anfield in the second leg of their Europa League play-off last August, before exiting 2-1 on aggregate, and a word with Danny Wilson, already on loan at Tynecastle from the Merseyside club, sealed the deal.
Ngoo said: "I was at the game when Liverpool played Hearts and I thought the spirit of the team was amazing. The way they worked for one another, it was a no-brainer. I obviously spoke to Danny as well and he said I should come up and I did. It is a big opportunity for me.
"It was an amazing experience against Inverness, I thought the fans were indescribable. I gave it everything I could to get to the final and it was just a buzz after the game."
Ngoo will make his Tynecastle debut in the Clydesdale Bank Premier League against Dundee on Wednesday night.
He said: "I am looking forward to it, I can't wait. It is going to be a big buzz."
Bottom club Dundee are seeking their third win over Hearts this season.
Dens Park manager Barry Smith said: "We have had two good results against them so far this season. That should give us confidence as they were both decent performances. We know this is a different match at another stage of the season but that still has to be the aim. We shouldn't have any sort of fear going into this match."