What could a 10-year-old Chinese maths prodigy possible offer The Stath in full-blown grim reaper mode?
Well, obviously, he can count on her.
In fact, diminutive number cruncher Mei (Chan) has to count on Statham's erstwhile agent Luke Wright rather more than he has to count on her when her life is threatened by Chinese triads and Russia mafia. Not to mention bent Big Apple cops.
However, when they are thrown together you could say they are more than the sum of their parts.
She's memorised a mysterious complicated code...and has fled her dodgy Beijing employers, much to their annoyance as well as the ire of rival Eastern European goons.
So it's just as well that she runs into Luke, a former spook who's also upset the Russians when he failed to throw a cage fighting bout. Quite unreasonably, they've ensured that everyone he befriends, beginning with his late wife, meets a sticky end.
Fleeing the massed ranks of baddies through the streets of New York, Luke and Mei - via a series of spectacular, vertebra-crushing rucks and block-wrecking shoot-outs - just about stay one step ahead of their murderous pursuers. But their number could soon be up.
Writer-director Boaz Yakin has presented Statham with pretty much his ideal role, a taciturn crack assassin done wrong but still with a firm grip on his moral compass.
Where it sings are the searing action sequences, sublimely choreographed setpieces engagingly linked with a narrative choc-full of lippy one-liners.
OK, so his American accent could be better...but then you never watch a Statham movie for the sparkling dialogue.
As the young people would have it: 'safe'