They are calling it "The Challenge" - and a challenge it is.
Volunteers with a dog rescue centre have just five weeks to build new kennels for 70 dogs on a piece of barren land, or face dire consequences.
Sai Kung Stray Friends Foundation have to meet the deadline or deal with the prospect of closing down and leaving all their dogs homeless - or facing the fate of being put down.
During those five weeks, the group have to raise around HK$2 million to fund the project, which will involve fencing off the land, installing shelters for the dogs and septic tanks, and connecting water and electricity supplies.
The challenge arose because the lease on their current site was not renewed after the landlord sold it.
The foundation was then told to vacate the site by the end of April.
After months of searching, chairwoman Narelle Pamuk said she came across the perfect location near Ma On Shan. However, the land was completely empty and without any structures, electricity or water supplies.
Pamuk said supporters' donations, including HK$350,000 from a man she met in the street, had paid the deposit and agent fees on the land, and for work to be carried out to excavate the field and connect temporary water and electricity supplies.
But they now needed to raise HK$2 million to pay for the remaining work, with kennels costing HK$30,000 for a single, HK$55,000 for a double and HK$80,000 for a triple.
"We desperately need help," said Pamuk. "We are at the stage where we really need money immediately.
"We have been quoted at HK$250,000 for the fencing without labour, and the kennels alone will cost HK$800,000."
Pamuk is appealing to people or companies to sponsor a kennel. In appreciation, sponsors will be given a name plate on the kennel.
"We are calling on the Hong Kong philanthropists to help us. There must be someone out their with the heart to support us," said Pamuk.
"It's the perfect site … but we have gone as far as we can on the donations we have. We have to be out on April 30; not one day later. If we don't get the money I don't know what we will do. I am really scared."
Pamuk said anyone who wanted to donate should e-mail email@example.com.