A possible concise summary is:
The speaker is a YouTuber who receives mysterious notes and texts from a stalker who wants to reveal himself at an abandoned water park. He gathers his friends and goes to the location, where they chase and catch the stalker, who turns out to be one of their own, Andy. Andy apologizes and says he just wanted to get close to them and take photos of them. They forgive him and head back home, but then the speaker gets another call from an unknown number with a smiley face emoji, implying that the real stalker is still out there.
Some possible facts extracted from the text are:
- The speaker received three notes from a stalker who wanted to meet at an abandoned water park. **(Fact 1)**
- The stalker also sent a picture of the speaker brushing his teeth from outside his window. **(Fact 2)**
- The speaker gathered his friends and rented a van to go to the water park. **(Fact 3)**
- Along the way, they found clues and messages from the stalker in the van and on their phones. **(Fact 4)**
- At the water park, they chased and caught the stalker, who turned out to be one of their friends, Andy. **(Fact 5)**
- Andy confessed that he was the stalker all along and that he did it to get close to them and take photos of them. **(Fact 6)**
- They forgave Andy and threw away his mask, but then received another call from an unknown number with a smiley face emoji. **(Fact 7)**