Bishop and pike, london's finest, are back with a bang in another action packed, adrenaline fuelled series of sky one's hit drama bulletproof. A year on, bishop and pike are still trying to repair the damage and pick up the pieces. However, when a routine sting morphs into something far more dangerous, they find themselves dragged into the cut throat world of undercover policing. With their pasts colliding and their moral codes tested to the limits, they are caught up in a deadly game of cat and mouse that stretches far beyond the borders of london and the uk. Only time will tell whether good policemen can pass themselves off as even better criminals. But as lines between good and evil, friend and foe become confused, will staying undercover push the boys and their team to breaking point?