Clive Griffiths admits anything but a win at Jersey on Saturday will relegate his side to National One.
The Knights travel to the Championship’s second bottom side, trailing their hosts by six points with just three games to go.
And Griffiths says although his side are up against it in this do-or-die clash, they will fight until the bitter end.
“The term ‘massive’ does not do this game justice,” Griffiths said.
“If we win, then we go on and need to win again and hope Cornish Pirates do us a favour against Jersey.
“If we lose, then we can start looking around the National One grounds we’ll be visiting next season.
“The players have fought and battled ever since I arrived here and they will continue to do that on Saturday.
“They’re up for this fight, they know it’s going to be tough but they’re prepared for it.
“I’ve heard and seen all the right things in training over these last couple of weeks and even those who won’t be involved have been making big contributions.
“The lads will give their all on Saturday and what will be will be.”
Jersey expect to welcome a bumper crowd to their St Peters home as they look for extra support in their bid to secure their Championship status.
Griffiths expects a tough test.
He said: “It’s going to be a tough place to go, particularly with a vociferous crowd. Jersey have done well this season.
“The lads need to go out there and silence the crowd quickly.”