 Grandpa has come up with a new invention: an instant gasoline pill. He tests the pill in the family automobile, and convinces Herman and Lily about the pill effectiveness. Even Grandpa has sent one sample to a corporation trying to sell it, and after an explosive test the president gets convince that the instant gasoline pill has future in the car industry. The president sends an executive to close the deal with Grandpa. Meanwhile, Grandpa s writing the exact formula in a paper, but Marilyn is worried because she s been suffering insomnia for the last two nights. Grandpa tells her that there s nothing to worry about, and after trying hypnotism with Marilyn, he gives her a magic potion in order to help her to get some sleep. But something is wrong next day, because Marilyn doesn t wake up. Then, Grandpa discovers that he uses the Sleeping Beauty potion, and only the kiss of a Prince (as in the original story) will brake the spell. Herman puts an ad in the paper, saying that a Prince is required. Two actors comes to the house, thinking that they re requiring the prince for some play. However, when the executive arrives for the second time looking for Grandpa, Herman sees that the young man would be the perfect prince, he even s named Dick Prince. Herman and Lily tells Prince that they re passing by a family crisis. Grandpa says that he will sign the contract if Prince kisses Marilyn, quoting Herman the "ugly-ducky" of the family. But Prince discovers that Marilyn is a pretty girl, when he kisses her the spell brakes and she wakes up. Later, Grandpa signs the contract, but Lily says that they won t accept any money, as a kindly gesture for Prince and his help.