Emma and Bryn’s friendship is put to the test when they co-anchor their school's morning. Meanwhile, Jessie figures out that Zuri has been reading her diary. Emma finds a piece of paper in the garbage can and thinks that the cafeteria meat is made of horse meat. The next day she was fired from 'What's up Walden' as the truth is it is actually made of cow meat and is punished by becoming a janitor. She finds a phone in the garbage can and finds out that Bryn framed her. Jessie and Bertram trick Zuri into thinking she's an alien and Zuri also tricks them back. Turns out, she was using special effects wires.
- Debby Ryan as Jessie Prescott
- Peyton List as Emma Ross
- Cameron Boyce as Luke Ross
- Karan Brar as Ravi Ross
- Skai Jackson as Zuri Ross
- Kevin Chamberlin as Bertram
- The title of this episode references to the movie, Tyler Perry's "Diary of a Mad Black Woman" and Jeff Kinney's "Diary of a Wimpy Kid".
- This is the second appearance of Bryn Breitbart.
- Jessie makes a reference to the movie Cloudy with a Chance of Meatballs.
- Jessie pretends to be an alien to teach Zuri a lesson.
- Bryn kisses Luke on the cheek in this episode.
- When Bertram gets his heart started again, he pumped his right pectoral, but a human's heart is located in the middle of the chest.
- When Zuri first told Bertram about reading Jessie's diary, she didn't tell him about the "smoothie adventure", but when Bertram was talking to Jessie about it, he said "You should turn that smoothie adventure into the movie."
| To view the Diary of a Mad Newswoman gallery, click here.