 Barney bought an engagement ring to Betty, however he asks Fred to hide it at his house. Trying to hide it to Wilma despite many ways (especially when she accidentally bakes the ring in a cake where Fred put it in the flour container), the latter discovers the ring while cleaning Fred s closet. Thinking it s hers, she thanks Fred. He ll have to tell Barney the truth and get another ring for Betty, but since he has bad credit at the jewelers shop, what would be plan B ?