Joe and the Nuclear Caverns

The nuclear reactor at Bizewell is overheating and has to be shut down before the big bang. Access is not possible from the surface owing to fires raging all around the reactor building. The only alternative is to approach the core through the caverns below the power station. "Joe", a freelance troubleshooter is the only person who fancies his chances of succeeding, however he can't do it alone, he needs your help desperately.