This story takes on the view of Subtract, Add's younger, but non-existent, brother. Given the name, Subject-1020, he never knew his real parents or what his older brother was like. Just another experiment within the Laboratory with a repulsive view on the world. When it's time to finally escape, he finds that the outside is both undeniably cruel and at the same time, his only hope.

Time and space is dying. The only way to stop it is to go back in time and destroy the abomination before the destruction actually happens. So, add a die-hard Bleach fan girl and her arrogant snob of a zanpakutou, and send them into to the cauldrons of adventure, action and despair. However, there's more than what meets the eye with the task at hand...