A group of armed robbers fleeing the police head for the New Jersey Tunnel and run right into trucks transporting toxic waste. The spectacular explosion that follows results in both ends of the tunnel collapsing and the handful of people who survived the explosion are now in peril. Kit Latura is the only man with the skill and knowledge to lead the band of survivors out of the tunnel before the structure collapses.
Now I would have thought that the last thing you'd allow to travel through a tunnel with billions of gallons of water above it, would be a truck full of explosives; but hey - if you need to make a film for Sly to come to the rescue, you've got to start off with a daft premisss. Add to this, a getaway car full of robbers that manages to collide with said truck and we have a load of superb pyrotechnics and then a sort of subterranean version of the "Poseidon Adventure" (1972) as our hero tries to lead a group of survivors up top. It takes far too long to actually get going: Sly leaves the rather incompetent rescue-management team on the surface to facilitate the rescue but only after about half an hour of disaster/character establishment that we could have easily have done without. A bit like with it's earlier maritime counterpart, there are some decent moments when all their lives are in peril, and Sly chivvies the gang along with a mixture of cajoling and threat, but the thing is all just so formulaic - even down to the dog and many of them, by the end, deserved what they got!