History has announced that it has directly booked a 10-episode UFO drama Blue Book, which is written by David O'Leary and adapted from the real-life U.S. Air Force research program. The background is in the 1950s and 1960s. At that time, there was a UFO craze in the United States, and the U.S. Air Force established Project Blue Book to conduct related research to investigate UFOs. The series tells the story of a smart university professor J. Allen Hynek who was recruited by the Air Force and was asked to handle thousands of unsolved cases in the Blue Book Project. Each episode will quote real cases and combine UFO incidents with the mysterious history of the United States.