Explain how kevin flynn got captured.

Kevin went into the game to check it out and make it better. But he couldn't go back because the portal to the game and also back to the normal world was closing. So Kevin was trapped in the world of Tron.

How Kevin Flynn got captured is when Kevin promised Sam he would return home, but the portal in Tron was closing and he couldn't escape. So that's how he never came back.

Kevin Flynn couldnt escape from tron, because when he goes into tron, theres a portal-line that comes down ever so often, so both a player and a program could enter and leave TRON. even if the portal-line DID open and Kevin was close, he wouldnt be able to go through becuase he had to stay there to stop clue from altering the tron world and messing up the whole game from what kevin made it to be. then sam comes along and TRON LEGACY BEGINS! WOOT!

Kevin Flynn got captured because Clue stopped him from leaving.

Kevin Flynn was walking with his partner, Tron, when he was surrounded 의해 CLU and his new army he had created secretly.
"Flynn! Am I still the creator of the perfect system?" He called out.
"Yeah."
Everywhere Tron and Kevin looked, red guards came for them.
Tron fought most of them off while Clu backed Kevin up. As Clu was about to derezze Kevin, Tron tackled Clu, wrestling and yelling, "Flynn, Go!"
Kevin ran, looking back to see Clu derezze (So he thought) Tron.
He knew now he was an enemy. And he had to run.
As he 모터 달린 자전거, 오토바이 out of the city, extremly melencoly due to the loss of his friend and the betrayle of his clone. He ran so far to avoid CLU, so when he turned back, the portal light faded before his eyes, leaving him captured and stranded in there.
Not to mention the death of the ISOs.

he wnt in and the portal closed on him and u can only open it from the outside