A hit team targets a future wedding for two cops and their friends including the best man and maid-of-honor Alex Cahill.

As the wedding of Walker and Alex takes place killer is hired to kill them

Just as Walker and Alex are about to go on their honeymoon, the assassin who was hired to kill Alex and whose partner Walker killed, sets out to get them. And he's determined to do it. Even if he has to bring down the plane they're on.

The end is near ... in a show told mostly in flashbacks, a wounded Walker ascends through a manufacturing plant, wounded and using his gun one bullet at a time on killers as he recounts the story of a visiting African businessman who collapses from an Ebola-like virus after infecting several people. The businessman, who has since died of the virus, was a pawn in an African diamond-smuggling ring. Now Walker has the diamonds and a whole cartel is in the building going after him. A "Dallas"-like twist ending keeps Walker going (this show and the one after it were doubled up on the same Saturday night after being postponed due to extremely low ratings).