Eddie Peng (left) and Wu Jing. [Photo provided to China Daily]

Directed by Hong Kong veteran Benny Chan, the action thriller is set for a summer release; the producers won't confirm a date, only saying it will be released in August.

Alongside Peng and Wu, Hong Kong stars Sean Lau and Louis Koo star in the feature.

Beginning from the murder of three innocents, the film revolves on the push-pull of opting for justice or yielding to power. The killer is the son of a powerful warlord, who threats to slaughter all the residents in the city if his son is sentenced to death.

"In the turbulent years that power outmatches law, the public needs some heroes to guard justice," explains Chan.