Harry est au bout du rouleau. Sa femme le quitte. Son boss le considère comme un moins que rien. Et il doit une forte somme d'argent à un mafieux. La rencontre avec une mystérieuse femme, lui donnant un bracelet aux pouvoirs étonnants, va changer la donne... London cop and compulsive gambler Harry Clayton is on the verge of losing everything. On the night when his huge debts are to be called in, he meets the enigmatic Eve, who gives him a mysterious bracelet said to endow the wearer with immense luck. Harry's fortunes suddenly begin to shift, but he also soon finds himself sucked into a sinister crime wave sweeping through the city.