When businessman Alan White's (John Hurt) estranged son Danny (Nick Moran) turns up on his doorstep one night, it is as the bearer of a highly unorthodox proposition. Danny is seriously wounded and offers to give up his heart for the transplant his dying sister so desperately needs, but only if Alan will take part in a risky criminal operation. Alan has no choice but to agree, and now prepares to embark upon the most dangerous evening of his entire life.