Killygarry held a firm grip on proceeding in the first half, using the aid of a strong breeze at their back to moving into an early lead.
Their early dominance was rewarded when they found the back of the Cuchulainn’s net when Cian Keaney was on target after 15 minutes.
Points from Darragh Noonan, Mark McDermott and Martin Reilly sent Killygarry to the break leading by 12 points.
At half time the Killygarry led 1-16 to seven points.
Mark Gilsenan played his part in what proved to be a resurrection on the the part of Cuchulainn’s with a goal after 5o minutes.
Indeed, Evan Doughty was causing the Killygarry defence all sorts of problems in the second half with his two point shooting.
Bryan Mcgee levelled the scoring with 61 minutes played, with drama ensuing in both goal mouths.
Both sides had a goal ruled out in stoppage time in Cavan Town, bringing a thrilling game to its conclusion at the home of Cavan GAA.
It finished all square at full time in Cavan Town, 1-21 apiece, with the replay set to take place next weekend.