While Dad takes the girls to his workplace for "Take Your Daughter to Work Day", Mom offers to take Lincoln to the dental office where she works.
Mr. Loud prepares to take his daughters to his office for "Take Your Daughter to Work Day", but Lincoln can't go, since he is the only son. Feeling sorry for Lincoln, his mother decides to take him to her job at the dentist's office. She encourages him to try to have fun, while she helps out Dr. Feinstein, and Lincoln manages to come up with several imaginative ideas. However, Mr. Loud's office is right across the street, and Lincoln sees his father and sisters having a more fun time than him.
Later, Lincoln notices that an arcade is also across the street, where he decides to stay for 30 minutes after Rita leaves to help the doctor, and puts her notebook in his care. When Lincoln makes it back to the office after 30 minutes, he realizes that he left his mother's notebook at the arcade. To make him feel even more guilty, Rita reveals that the notebook actually contains a novel she was working on for the past seven years. Fortunately, she has to work another half-hour, giving Lincoln enough time to get it back.
When Lincoln goes back to the arcade, he finds that the janitor had picked up the notebook and thrown it away. To get the notebook, Lincoln gives chase to the garbage truck, first on roller skates and then pulled by a horse. Soon, the chase continues with Lincoln going through a street cleaner, a hot dog stand and a construction site to get the book. Lincoln finally manages to obtain it, with his feet trapped in wet cement.
Lincoln makes it back to Rita, trekking through with his feet covered in dry cement, but the damage the notebook has taken causes it to crumble to dust the moment he gives it to her. Rita orders Lincoln to explain what happened and he shamefully tells her the whole truth. After hearing the story, Rita admits she's disappointed that he lied to her but he actually might have done her a favor since she thought her novel was boring and that his efforts gave her inspiration for a more exciting tale. But rather than just tell her everything, Lincoln takes her on an adventure recreating his steps.
Mr. Loud and his daughters return home and feel sorry for Lincoln because they think he had a boring day with their mother, until they see him and Rita returning home on roller skates pulled by a horse. They watch them go by while their jaws drop in utter astonishment due to the amount of fun Lincoln and Rita are having.
A Novel Idea - The title of this episode is a reference to the phrase of the same name, meaning "of a new kind, different from anything seen or known before".
Back to the Future Part III - The song of the title card and at the end of the episode sounds similar to the western-style song of the 1990 film.
Finding Nemo - The girl with big braces looks like Darla from the film.
Steve Irwin - At one point, Lincoln does an imitation of the late Crocodile Hunter.
Apollo 13 - When Lincoln is about to get trapped in the closing dental chair, he exclaims "Houston, we have a problem." A reference to the famous line by Tom Hanks' character, Jim Lovell.
Teenage Mutant Ninja Turtles - The cover of Teddy Toothbrush vs The Evil Ninjavitis are possible references to Raphael (Ninjavitis with a purple bandit mask wielding a pair of sai), and Leonardo (Ninjavitis with a green bandit mask wielding a katana).
Batman - Lucy is seen wearing a Batman mask and cape while zip lining with Leni.
Dilbert - The way Lynn Sr.'s office has silly and fun things not suitable in an office is like that of the office of the comic strip by Scott Adams.
Nerf - The toys the kids and Lynn Sr. used look similar to the popular toy gun brand.
During Lincoln's pretend jewel heist, he pulls down the surgical mask he's wearing, and the straps fall with it. This is impossible as the straps are tucked behind his ears, and one of them is behind the dental tool used for his microphone.
Possible: When the sisters were left with their jaws hanging after seeing Lincoln and Rita roller-skating while being pulled by the horse, Luan's ponytail is missing.
It may be entirely possible that it was removed to avoid obscuring Lori's face.
Mr. Grouse saying "Nice (insert object), Loud!".
Lincoln thinking of different ways to pass the time while at the dental office, only to screw up at something, and become disappointed when he sees his sisters having a blast while at their father's office.