Release Message:  In the 30th century, time travel becomes illegal after a time paradox crisis. The Time Protection Department (TPD) is established to watch for and stop time crimes. Narration by Yukitoshi Hori

Description:  By the year 3000, the Earth had reached an era of newfound prosperity. United with various races from other planets, space and time travel became possible. 10 years after the invention of the first time machine, the Time Defense Bureau already had its mission to preserve history and prevent time travel; constant time travel had endangered the 30th century in the past and the Bureau existed as a precaution.