you were Cat Noir and you had lost your Miraculous and you looked for it everywhere but you wouldn't find it, you would only find Ladybug's Miraculouses and you would put it on

While you were saving Paris using Ladybug's powers, you would feel someone touch you on the shoulder, when you turned around, you would see Ladybug but with your Miraculous, she would look at you and say

Lady noir: well... it seems that we changed Miraculous by mistake he he he