-Talk to Gorsefur (light brown she cat with brown eyes) say yes when she asks if you can do a favor
-Go to Plumclaw (dark blue eyed cat at the Fireclan and brambleclan border)and talk to him
-Go to his brother Robinfur (red eyed brown cat by leaders den)
-Talk to Robinfur
-Talk to Breezestar for permission
Go up the hill (arrow by Hawkfeather The grey and white she-cat)
-then go to Fallenclan camp and ask the black and white guard for a stone
-wait until the same time next day and you should see a stone by the black and white cat, click on it and then walk to where you last saw Robinfur
-Talk to Robinfur to place the stone
-Then go back to plumclaw and talk to him
hope that helped