Following the 0-0 draw in the first leg in Sousse a fortnight ago, the Tunisians claimed the Final 3-1 on aggregate, completing a feat not many thought possible against the five-time winners.
In fact, Ahly were chasing an unprecedented third straight continental crown, but were rocked by goals from Afouene Gharbi, Amine Chermiti and Mohamed Ali Nafkha, and had to play much of the second half with only ten men after Emad al-Nahas received his marching orders.
A capacity crowd of 50 000 were stunned into silence when Gharbi gave the visitors the lead in first half stoppage time.
That meant the home side had to score twice and they got one of those through Al-Nahas five minutes into the second half, before the turning point came as the player was correctly sent to the stands by Moroccan referee Abderrahim al-Arjoun after hauling down Chermiti to deny the visitors a goalscoring opportunity.
Etoile looked comfortable for the remainder of the game and made sure of the result two minutes into stoppage time through Chermiti, before Ali Nafkha added a late third.
For home fans it was a bitter pill to swallow and there were ugly scenes after the game as they threw objects at Ahly coach Manuel Jose as he collected his losers medal.
But for Etoile, and Tunisia, a night of wild celebration as they can now rightly call themselves the Kings of Africa.