Jeff thought about his two siblings; his 12 year old sister Jamie and his 14 year old brother Jason. Over the years, the two left all of their responsibilities to Jeff while they hardly did anything. Jamie was very lazy around the house, often communicating with her friends on Facebook. Jason is currently flunking out in 8th grade, and has recently asked Jeff to do his homework for him. After years, Jeff has had enough. He felt that it was time he teaches them a lesson on responsibility. How to do that? Well, Jeff was reluctant on this decision, but he decided to make himself the youngest sibling so that Jamie and Jason would have to be more responsible.
While on the Chronivac, Jeff decided to make himself 10 years old again. He set the Chronivac so that all of reality would change so that everyone except himself, Jamie and Jason would think that Jeff was really 10. He also decided to change his room and clothes to make them more age appropriate. After finishing filling in the settings, Jeff pressed 'Enter' and waited for the changes.
Almost immediately, Jeff found himself shrinking alongside his clothes. He found his room to be changing as well. Jeff rushed to the bathroom mirror to see how the changes are going, but by that time, he was already 13. Jeff then saw as puberty left his body altogether and returned to boyhood. Shortly after that, the shrinking stopped. Gone was the 16 year old nearing the end of puberty with muscles starting to bulge. In his place was a 10 year old boy that Jeff had become. Jeff realized that some of his baby fat had returned, but he was ready for what's to come anyway.