A movie about a white hacker club ‘Better World’ and a genius hacker ‘HEX’ having an inevitable showdown with the black hackers as the Songdo International Exchange was hacked in the fourth industrial revolution.

Mark Thackeray (Poitier) is a West Indian, who in the 1967 film had taken teaching in a London East End school. He spent twenty years teaching and ten in administrative roles. He has taught the children of his former pupils, but is now retiring.