After spending many years with the Armed Forces and as an operative for the Ministry of Defence, Dan McCullen starts a new job with a major medical company as a Facilities Manager. Here he falls in love with a co-worker but whilst they move on together, they encounter staff who for one reason or another want to make other people's lives more difficult. They secretly and humorously refer to these as Alligators. When Managers undermine the Managing Director, Dan McCullen suspects that there is something amiss and so he starts to investigate and finds a complex drug scam going on within the company. When he starts to question this, one of those involved takes it upon themselves to beat him up expecting he will give up his enquiries. This has the reverse effect as they do not know his background. Everything changes when he inadvertently gets caught up in a burglary on the premises where several people get seriously hurt, and it's all caught on CCTV.