Toony Horror Fan Fiction Story

After attending I.M. Weasel and Agent Honeydew's wedding, Dexter and Blossom decide to spend more time together. On the way, they come across a strange castle and things get only freaky from there. They meet Dib and Gaz with their father's secrets to show them an artificial creature he created and they have a night out to remember for a long, long time. Or do they?