I am walking on a beach somewhere towards a plane wreckage. I go inside the wreckage, find a tunnel and fall deep down underground. I discover a society living in this underground city with multiple levels and some sort of scientific experiments are going on in some places like labs and the deeper levels of the city. I walk around, trying not to look suspicious because I'm amazed at what I just discovered but people get a little bit suspicious anyway because I don't fit in, I am wearing strange clothes compared to them.
Eventually I manage to exit the city and get back up to the surface. I go see my mother but the government is looking for me and I get caught. The story turns into a conspiracy with the government trying to capture me and my mom for finding the underground society. After defending myself and my mom from secret service men who are trying to kill us, the police starts chasing us aswell, unknowing of the conspiracy. It all culminates to the point where I understand that the only way to escape from being chased down like a dog and protect me and my mom's life is to make the police follow me back into the underground city to show them what got us into this mess.
The dream fades away and I wake up. No lucid dreaming happened.