Please HELP SAVE Ace the Puppy

Ace is a young healthy pitty mix altered male puppy who was saved from the NYCACC high kill shelter this past April apx 1 month ago by a woman who ended up not wanting to keep him so she rehomed him to a woman who kept Ace ONLY 24 hours and then took this puppy back to the same high kill shelter knowing his fate.... Both of these homes chose not to keep him knowing that there was a rescue and a private party willing to take him that same day until a permanent home could be found.
The second woman who turned Ace back into the KILL SHELTER told a unbelievable story on why she was returning Ace and not wanting to keep him...which has all but sealed this amazing little pups life...
We are almost out of time to stop the NYCACC from killing ACE...WE NEED YOUR HELP NOW...