OK, the newest idea involves the son discovering how his dad snared his wife and then how he made a living at the castle in Francyvlania.
It’ll work, trust me. It involves the dad being fired as the castle mascot and being banished to kitchen duty for fondling passion fruit.
Another idea involves the dad getting stuck doing the laundry and realizing there is no suitable detergent for removing “racing stripes” in his underwear, and he devises a product that does and becomes a millionaire. Which he then loses subsequently on some bad bet. Or hookers and drugs. Lots of potential for scatological jokes.