A possible concise summary is:
The speaker is a YouTuber who found a mysterious key in the ceiling of his studio. He asks his colleague Kevin if he knows what it belongs to. Kevin says it might be a file cabinet that was left by the previous tenants. They go to the warehouse where they stored the file cabinet and try to open it with the key, but it doesn't work. The speaker decides to ask around on Monday if anyone owns the file cabinet, and if not, he wants to break it open with his team from the show Rekt. He asks his viewers to like the video and remind him of the file cabinet.
Here are the key facts extracted from the text:
1. The text is a transcript of a video by Matthias, a YouTube personality who runs several channels and studios.
2. The video is about Matthias finding a mysterious key in the ceiling of his studio and trying to figure out what it opens.
3. The key has the number 863 and the word Sentry on it, which indicates that it belongs to a fireproof safe or vault.
4. Matthias asks Kevin, who helped him get the studio spaces, if he knows anything about the key or the safe.
5. Kevin remembers that there was a file cabinet that was left over by the previous tenants and he thinks he put it in the orange base warehouse.
6. Matthias and Kevin go to the warehouse and find the file cabinet, but the key does not fit and gets stuck in the lock.
7. Matthias decides to wait until Monday to ask around if anyone owns the file cabinet before he tries to break it open or let rekt destroy it.