Broken time machine

Broken time machine
Kevon builds a time machine but doesn't use all of the pieces. He knows he can fix it but doesn't want to disappoint his friend
finally I finished the time machine
His friend comes and is nervous about going to the past. Kevon doesn't mention the extra pieces and starts the machine
Are you sure we should leave?
You said you wanted to see dinosaurs and that's what we're doing
Dinosaur!
They travel back in time but are attacked by a dinosaur.
Run!!!
We're here want to walk around see the si-
They barely escape. Kevon realizes that the pieces were for the future components of the machine but keeps it a secret
I think I need to sit a while.
Whew, that was close. this cave saved us.
Kevon's friend get's upset and wants to go home. Then Kevon tells about how he messed up the time machine. They argue because now they cant get home
I want to go home.
Why make a time machine that can't go to the future!
Well you wanted to see dinosaurs so it your fault too. So stop crying and help me think of a way out of this.
We can't I messed up and it only travels to the past. I was going to make a remote but-