Eterna Tero Is the year 70700, the mankind has reached the limit of the existence, no one dies at cause of a medical disease anymore and humans have far exceeded the life expectanct. Cemeteries have been virtually abandonuts because of the low mortality rate. Believers attribute this age of seeming bonanza to God's design, and persecute anyone who wants to make any change on earth. Nonbelievers are a minority in a world governed by religion, they have determined by means of science which the end of mankind will be before the end of the 70th century. Dajsu a young man from a well-off believing family discovers due to a coincidence the existence of Eterna Tero, a plan that has been developed by non-believers for more than 600 years to save mankind. Dajsu will embark on an adventure to try to carry out the Plan and thus prevent extinction, not knowing that the Plan demands a great Sacrifice that will affect all humanity.