[Zack meets his future son, Mack, who has time-travelled back because he needs Zack's help
So, do you want to take a shot at explaining this?
OK. Yesterday, I borrowed something from my Dad. That's you. A certain family heirloom. But then I lost it, and if you find out, I'm grounded for life. So I came back into the past to find a replacement before you get back from work. The problem is, I need your help to pull this off.
So this is the plan: You want me to help you replace an heirloom so that...