It’s nighttime, there is snow falling outside, and the Loud siblings are watching the news report, in hopes that there will be a snow day. Patchy Drizzle comes on screen, and announces that all the schools in the county, including Royal Woods, will be closed. The Loud siblings applaud getting a snow day, but Lisa is not too happy about it. She explains that missing school isn't good for a developing mind, and insists that she will use her salt device to allow the roads to be open for them to go to school. The Loud siblings aren't happy about this, and beg Lisa to allow them to show her what is fun about a snow day. She reluctantly agrees, and they are happy about this.
The following morning, the Loud siblings, minus Lisa, are all excited about no school and Lisa gives them four hours to change her mind about having a snow day, clearly not excited. Lincoln's attempts with sledding and igloo building fail. Then when Lana tries building a snowman, Lisa uses her new robot to melt it with lasers. Lucy's attempt is by lying in the snow, but it doesn't work as Lisa mentions about freezing in the snow. Lola wants Lisa to be impressed with ice skating, but the latter convinces her the ice isn't sturdy enough which results in Lola falling in the frozen water. Luan attempts to show her how to have fun by pulling a prank on Lincoln, by putting snow down his pants, but she informs her that getting cold "is no laughing matter", and she's still not convinced. Lynn tries to change her mind with bobsledding, but Lisa crashes and she's finally convinced to use her salt machine. The Loud siblings are upset about this and an unknown assailant tosses a snowball at Lisa. When she asks who did, the rest of them turn to the side to reveal it was Lana and Lisa retaliates. Throwing snowballs convinces Lisa that a snow day can be fun and they enjoy the rest of their day. That evening, Lisa thanks Lincoln for convincing her about how a snow day can be fun but he is upset that the next day, they will have to go back to school. Lisa has a plan.
The following day, Lincoln is awoken by his sisters, revealing that a miracle has happened and that there is still snow falling, causing the schools to be closed again. Lisa reveals that she informed some friends at NASA and that thanks to cloud seeding, they have another snow day. They all go out to enjoy themselves, but Lisa is prepared with many devices she created for the purpose of pelting them with snowballs. Eventually, Lisa goes completely overboard with snowball fighting that she even pelts them inside the house, and no matter where they hide she's there waiting to use one of her snowball launchers to pelt them in the following ways:
Assaulting Lori while she's telling Bobby about the plight
Ambushing Lana when she tries to use the bathroom
Dropping a mound of snow on Lincoln and Leni through the chimney
Flattening Lynn and Lucy in the vent with a giant snowball that rolls on top of them
Later that night, they are watching another news report where Patchy says that there is still a foot of snow and that schools will be closed again. The Loud siblings dread this and Lisa shows them her new snowball tank, which she plans to unleash the next day. The Loud siblings cannot take another day of Lisa going crazy with snowball fighting and convince her to use her salt machine so that they may go to school. She is convinced and agrees to go through with it, which the Loud siblings all applaud to the idea of returning to school.
The following day, Lisa uses her snowball tank (now converted into a salting tank) to make paths on the roads so they can go to school. She looks towards the audience and explains that this was her plan all along; to get her siblings to not want anymore snow days as she uses the salt tank to make her way on the road. Lincoln, realizing something feels off, looks to the audience in confusion and asks, "What just happened?"
This episode reveals that Lola weighs 40 pounds (18 kilograms).
It is most likely that it's also Lana's weight, considering they are identical twins.
This episode reveals that Lana has a lucky booger. According to her, it helped her get through preschool.
It also reveals that Lola has a lucky rabbit's foot.
This, in turn, reveals that they both believe in superstition like Lynn.
When Lincoln crashes at the bottom of the hill, there is a "CRASH!!" onomatopoeia, which adds in to the comic book-like style of the show.
Lori, Leni, Luna, and Lily are not shown giving snow advice to Lisa.
Luna, Luan, Lola, and Lily are not shown being pelted by Lisa in the house.
Innuendo: On Bobby's computer, a chat board can be seen in the left side of the screen, suggesting that Bobby was chatting with someone when Lori called him. The chat board looks eerily similar to that of an adult chat room, and their conversations consisted of "Lol", "Want To See It?", "Hey Cool", "Ya", a picture of a cat followed by the words "Meow", and "Wha".
Snow Bored - The episode's title is a pun on the word "snowboard" and the phrase "so bored".
Nat King Cole - Leni holding out chestnuts, when she and Lincoln are in the chimney, and then Lisa saying "Jack Frost nipping at your nose", is a reference to the song "The Christmas Song".
Wilhelm scream - It is heard once again when Lynn and Lucy try to escape a giant snowball from inside the vents.