A possible concise summary is:
A father tries to teach his son Jeffy a lesson about not stealing by showing him his future self if he keeps being bad or good. He hires actors to pretend to be Jeffy's future self, but Jeffy is not impressed by the bad future and steals money from the good future. The father fails to discipline Jeffy and the cop who helped him loses his money.
Here are some key facts extracted from the text:
1. Jeffy asks his dad to buy him a new game called Fall Guys and a PlayStation 4.
2. Jeffy steals a PlayStation 4 from Target after his dad refuses to buy him one.
3. An officer comes to their house and sees Jeffy with the stolen PlayStation 4.
4. The officer gives Jeffy's dad one more chance to ground him instead of taking him to jail.
5. Jeffy paints a rude message on the wall for his dad and gets in more trouble.
6. The officer tries to scare Jeffy straight by showing him a fake inmate and a fake future self.
7. Jeffy steals money from the officer by pretending it's his future self's money.
8. Jeffy learns his lesson and stops stealing and doing bad things.