Milo surprises his parents by inviting the extended Murphy family to town for Christmas, multiplying the effects of Murphy’s Law. Meanwhile, an argument at the company Christmas party threatens Cavendish and Dakota's friendship, prompting older versions of themselves to go back in time and fix things.
Tropes:
- Continuity Nod: Dakota (alone in the Bad Future and with Cavendish in the good one) becomes famous with his going to the zoo song and variants of it.
- Contrived Coincidence: The only time the two plots come close to intersecting is when Dakota and Cavendish decide to eat eggrolls at the same restaurant and day the Murphys are celebrating Christmas.
- Gonna Need More X: One of Dakota's plans to prevent himself and Cavendish from arguing consists on having a dinosaur crash the party. Once it fails, he decides he needs a bigger dinosaur. He does try it later and figures out the dinosaur's size wasn't the issue.
- Implausible Deniability: Milo's cousin Nate adamantly insists that he does not have the family curse of bad luck, no matter how many disasters befall him.
- In Spite of a Nail: No matter what changes their future selves make, Dakota and Cavendish will end their friendship over a Christmas party's last eggroll until they learn their future selves went back in time to prevent it from happening. Even in the future where their friendship survives, Dakota still becomes a celebrity. The only difference is that Cavendish is also famous in the new timeline.
- Lonely at the Top: In the timeline where he and Cavendish are no longer friends, Dakota eventually becomes a celebrity but feels lonely without Cavendish. He's still just as famous in the new timeline but not as lonely since he has Cavendish at his side.
- Motor Mouth: Milo and Sarah's grandparents tend to talk very fast and talk over each other, making it hard for others to understand.
- The Pollyanna: Milo's Aunt Lora and Uncle Joey are even more upbeat and optimistic than he is, something Zack comments on.
- Raptor Attack: Dakota sends a (Jurassic Park-styled) Velociraptor to eat the last eggroll, only for it to maul Cavendish instead. Later, the two let loose a whole pack of raptors to the party.
- Road-Sign Reversal: Future Cavendish reverses a sign so he and Dakota won't find and argue over the party's last eggroll. Unfortunately, Future Dakota has the same idea.
- Set Right What Once Went Wrong: The B plot features Dakota's and Cavendish's future selves trying to prevent the argument that ended their friendship. Even if their future selves reconciled, their years were still wasted over a broken friendship.
- Shout-Out:
- The Swinter Song is played as a background music. The instrumental of Candace Party also plays in a segment.
- Milo's Uncle Joey and Aunt Lora compare being on a sinking boat to Titanic
- Due to circumstances, the Murphys have to go to a Chinese restaurant for their Christmas dinner, kind of like another family also had to on Christmas Day.
- Strange Minds Think Alike: Both Dakota and Cavendish decide to go back in time to save their friendship without either of them knowing the other is trying the same. Both try the same first plan.
- Throw the Dog a Bone: Cavendish and Dakota may be nobodies in the Bureau of Time Travel, but this episode makes it clear that after so long, they will finally catch a break and get the respect they deserve as pop stars.
- Time Traveler's Dinosaur: The time-travelling Cavendish and Dakota bringing dinosaurs to a Christmas party they're attending in an attempt to prevent themselves from getting into an argument that ruins their friendship.
- Two Lines, No Waiting: There's a B plot featuring Dakota and Cavendish's broken friendship and their efforts to prevent it from being broken in the first place.
- Under the Mistletoe: Subverted: A mistletoe drone flies over Brick and Savannah at the Christmas party. They immediately vaporize it.
- You Can't Fight Fate: It looks like Dakota and Cavendish are destined to end their friendship no matter what their future selves do to try and stop it, before their future selves have enough and just tell them directly, which ultimately does allow them to stay friends in the future.
