Isle Of Destiny readily put her rivals away by 16 lengths in the beginners' chase at Down Royal.
Gordon Elliott's six-year-old mare ran right away from them once she got to the head of affairs before the final fence.
She delivered at 11/1 and, afterwards, jockey Keith Donoghue said: "She's had a couple of unlucky runs but today they went a good gallop and she jumped well.
"It suited her coming off that strong pace, she did it well and won easy in the end.
"She handles the ground and probably will be a bit better on nicer ground in the spring. There are good options for those mares so hopefully she can keep going now." Theatre World (5/1) was headed before the last and had to settle for a remote second. The White Volcano who went off 9/4 favourite, was another three lengths back in third.