"The Trouble with Two-ni-corns" is the first segment of the ninth episode of Yin Yang Yo! It premiered on September 8, 2006 alongside "Scarf it Up!".
When Master Yo accidentally breaks Yin's twonicorn doll, she and Yang travel to the Valley of the Twonicorns to have it fixed. However, instead of happiness and peace, they find Ultimoose! Will they be able to restore peace to the valley?