In the future, school students have to take a test every year to be promoted to the next level, but on their last level, a special test is held, a test that will help them decide where they want to work, a diploma. there are many occupations, but one of them is a group called the pasteners, these people are known to be fighters who travel in time, no one knows why they travel through time or what the purpose behind it is but one day, when a boy names Chris Harley had to write his exam and do his test, he is chosen to become one of those people. Read along Chris's journey and find out all the secrets that he unlocks as he fights to survive.