In the first proper buddy-up for the Hollywood action legends, Sly Stallone plays Ray Breslin, a professional prison breaker-outer, hired by companies to test out the security of their jails. However, when he's double-crossed and finds himself incarcerated in a futuristic prison 'off the grid', only his wits, gravelly voice and violent tendencies will save him. Those, and prison gang leader Emil Rottmayer (Arnold Schwarzenegger), who offers Ray protection in exchange for his own freedom. A cavalcade of cliché and machismo, this proves that nothing will hold Arnie'n'Sly... even the world's most secure slammer.
With a combined age of 133, you'd expect Arnie and Sly would have trouble breaking out of a retirement home...let alone a high-security 'off the grid' prison, chillingly known as The Tomb.
Yet that's the challenge facing the two creaking old stagers when they come together for the first time (excluding what was essentially an Arnie cameo in The Expendables 2) in this geri-action caper.
Sly plays Ray Breslin, an incarceration consultant who unhappily finds himself banged up in an impregnable, maximum security prison... that he ironically designed himself.
He's been set up by his money-grabbing boss (Vincent D'Onofrio) and his only way out is with the co-operation of big-house, big daddy Emil Rottmayer (Schwarzenegger), a wizened old lag with a goatee and reams of insider information.
It's not long before Ray's twigged how to slip out of solitary and wheezingly made his way through the labyrinthine glasshouse...only to discover the giant nick isn't going to be that easy to break out of.