Though Tron: Legacy ultimately saw the program Quorra enter the real world, the hazardous program, Clu, was defeated, implying that the portal had been closed. Tron: Ares' trailer has confirmed ...

In Tron: Legacy, we see Flynn's son Sam enter the Grid in order to stop the evil program Clu from invading reality. Tron: Legacy also saw the algorithm that helped Sam on his mission, Quorra ...