The Quads go on a overnight school trip but Dawn get sick so they have to avoid Dawn's illness so they can go on the school trip.
Dawn suggests they practice staying up all night at the sleepover by staying up all night at home. The other quads disagree, so Dawn ends up being the only one who can stay up all night. But the next morning when Dawn has a sneezing fit, they realize this has made her catch a cold, but later, all the quads get sick. Hiding the sickness so they can witness the epic moment, they stumble into a soundproof exhibit where they get out all their coughs and sneezes, they cannot find the exit anymore. They soon realize that they are the epic moment after the chaos in the exhibit, and they are sent home of course.
- 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
- Siena Agudong as Natlee
- Lydia Boland as Molly
- Cody Veith as Oscar
- Matthew Gordillo as Arman
- Jason Sims-Prewitt as Principal Tarian
- It's later revealed in Quadshank Redemption that the Harper quads ended up getting everyone in the school sick after the events of this episode.
- Ricky being so quick to say "bless you" when someone sneezes is seen again in Sweet Foot Rides.
- Mae and Molly's fights were first seen in Quad Court
- The quads mention that Dicky might fail to pack underwear or just pack underwear alone. This is seen in Unhappy Campers when he refused to pack underwear for camp.
- Dawn's middle name is revealed to be Abigail.
- This is the first episode to air in July 2016
- Viewers noticed that Anne's stomach is no longer covered due to the actress Allison Munn's pregnancy. This is also the reason why this episode aired after a 4-month hiatus.
- This is the tenth hiatus.
- It is unknown how Tom got sick.