A group of friends are building an underwater Lego house in a pool. The project is a consolation to Rebecca, whose giant waterslide was destroyed. As they work on the house, they discuss their past experiences, including a 24-hour mermaid challenge. Meanwhile, they receive mysterious messages, including a warning from "Rocky" about the "GM" possibly hacking into their channel. They continue building the house, and once it's complete, Matt and Rebecca go on an underwater "date" inside the house, dressed as mermaids.
Here are the key facts extracted from the text:
1. The speakers are planning to build a house underwater using giant Legos.
2. Rebecca is upset because her waterslide was destroyed.
3. A giant Lego slide was previously made and a video of it was shared.
4. The speakers are trying to make the world's largest underwater Lego house.
5. Sebastian gives a thumbs up.
6. The speakers mention that someone named Carter built a giant boat that sank.
7. The speakers plan to have an underwater date in the Lego house.
8. A mysterious person delivers lunch and leaves a note that says "They are on to you."
9. The speakers suspect that the note is from a team called the GM.
10. A barcode is mentioned as a possible identifier for the GM team members.
11. The speakers continue to build the underwater Lego house.
12. The house is completed and the speakers go on an underwater date.
13. Rebecca sings a mermaid-themed song.
14. A person named Rocky is mentioned as the sender of a message about the GM team.
15. The speakers plan to investigate further and check on a person named Z twin.
16. The speakers mention going to a gym where they did ninja training.
17. The speakers plan to get to a location and see what the GM team is saying.
18. A person is instructed to "get down, stay low, don't move."