What's the Worst That Quad Happen? is the seventh episode of Season 3. It premiered March 18th, 2017.
After staying at their grandmother's house, the quads hope to receive a present as they always do after a long day of good behavior. The quads received a drone that on their watch crashes into a neighbor's yard. Their objective is to get the drone back and return everything back to normal.
- Lizzy Greene as Dawn Harper
- Casey Simpson as Ricky Harper
- Mace Coronel as Dicky Harper
- Aidan Gallagher as Nicky Harper
- Allison Munn as Anne Harper
- Brian Stepanek as Tom Harper
- Kyla Drew Simmons as Mae Valentine
- Dale Raoul as Trish Harper
- The episode title is a play on the phrase, "What's the worst that could happen?"
- This episode aired after a hiatus of one month and one week.
- This marks the first appearance of Tom's mother, Trish, after being mentioned in many previous episodes.
- When Trish is saying "That little fellow lives in a pineapple!", she may possibly be referring to the popular Nickelodeon show SpongeBob SquarePants
- This is the first episode to be featured on "The After Party".