The summary is:
This is a transcript of a video where two people are following clues from a mysterious person who sent them a video. They go to a location where they have to dig up a tip that is buried under the initial Z. They find a note that says they met the person four years ago and they have to be more attentive. They also see a man in black behind a tree and a sign that says "Keiko". They wonder who is behind the scam and they promote their channel.
Here are the key facts from the text:
1. The narrator is investigating a mystery involving a person who has been sending them messages and clues.
2. The narrator has been following the clues for four years.
3. The clues have led them to a specific location, where they believe the person may have hidden something.
4. The narrator is searching for a shovel and a cart, which they believe may be connected to the mystery.
5. They find a rat poison sign and two carts, but do not touch them.
6. The narrator is trying to figure out who the person is and what their motives are.
7. They believe the person may be someone they have met before, possibly through their YouTube channel.
8. The narrator has been receiving messages and clues from the person, including a video that shows a shovel and a cart.
9. They are trying to solve the mystery before the person disappears.
10. The narrator has a team that is helping them solve the mystery.
11. They are using a map to try to locate the person and the hidden object.
12. The narrator is being careful not to reveal too much information about the mystery on their YouTube channel.
13. They are trying to keep up with the person's clues and messages, which are being sent through various means.
14. The narrator believes the person may be playing a game with them, and they are trying to stay one step ahead.
15. They are using their YouTube channel to document their investigation and to ask for help from their viewers.
16. The narrator has a theory that the person may be someone who has been following them for a long time.
17. They are trying to gather more information about the person and their motives.
18. The narrator is getting close to solving the mystery, but they are still unsure about some details.
19. They are planning to reveal the solution to the mystery on their YouTube channel.
20. The narrator is grateful for the help and support of their viewers, who have been following their investigation.