During the blitz, over 450,000 bombs dropped on Britain and every bomb has it's own story. This series examines the specific effect of four bombs, from their initial impact on individual lives, right through to their wider consequences for the Second World War, and all the way to the present day. Each episode begins with one bomb in on city - London, Hull, Clydebank and Bristol. As survivors and relatives attest, these bombs changed lives and created a legacy we all live with today.