A group of friends discovers a mysterious monitoring system in their home, which they believe is being used by a hacker to spy on them. They use a metal detector to search for hidden cameras and microphones, and eventually find a hidden tracking device under a floorboard. The device is a miniature computer chip motherboard with a battery and a button that can be pressed to activate or reset it. They suspect that the hacker is using this device to track their movements and decide to reverse engineer it to learn more about the hacker's identity and location.
The group also finds a suspicious poster in one of their rooms, which they believe may be another way the hacker is spying on them. They discover that the poster contains a metal object that is triggering the metal detector.
One of the friends comes up with a plan to lure the hacker to their location by pretending to go swimming in the backyard pool. They hide behind a balcony and wait for the hacker to arrive. When the hacker appears, they try to sneak up on him, but he suddenly jumps over a tall fence and escapes.
The friend then discovers a fan mail package that the hacker was trying to steal, which contains a map and a painting that the friend recognizes from their childhood. They believe that the map may lead to their old school, where the hacker may be hiding. The friend decides to investigate further and plans to visit their old school to see if they can find any clues about the hacker's identity and motives.
Here are the key facts extracted from the text:
1. A monitor in the house suddenly turned on and showed footage of the house.
2. The footage was not recorded by the homeowners, suggesting someone had been spying on them.
3. The homeowners decided to investigate the house for hidden cameras and microphones.
4. They used a metal detector to search for devices.
5. They found a floorboard that didn't match the others, and suspected it might be hiding something.
6. Underneath the floorboard, they found a small device with a triangle shape.
7. The device had a battery and a miniature computer chip motherboard.
8. They suspected the device was a tracking device.
9. They found fingerprints on a glass bottle and a bag that didn't belong to them.
10. They discovered a poster with a triangle shape that matched the device they found.
11. They decided to reverse-engineer the tracking device to learn more about it.
12. They tried to lure the hacker to their location by pretending to go swimming.
13. The hacker appeared, but jumped over a fence and escaped.
14. The homeowner found a fan mail package that the hacker had tried to steal.
15. Inside the package, they found a map that seemed to lead to their old school.
16. They decided to investigate the school to see if they could find the hacker.