An underground city built millions of year ago. When a meteor hit earth and killed the dinosaurs, a ship observing from an ancient highly advanced civilization got caught in the gravity and crashed. Many survived, but due to the blocked sunlight and highly toxic cloud from the impact, they had to go underground. They survived and built a huge underground city that lasted for thousands of years. Due to unknown circumstances, they lost the ability to reproduce. Many years went by and many died until there were only a few left. They experimented with animals that looked similar to them and tried to combine their DNA with them. Before the results were known, they had to go into hibernation to preserve the handful of survivors. Now, in our time, a battered wife, running away from a drunken husband, ends up in an underwater cave in the Rio Grande River. She finds a trinket that appears to be gold. She sells the trinket in Mexico but a drug dealer finds out about the trinket and forces her to reveal the place of discovery. They find nothing, but a blue door that they cannot open or destroy. Brad Staples buys the trinket and it's millions of years old. He too finds the blue door. Learn the secret of the blue door. Will he get past the door and discover the underground city?