left turns off familiar streets

Sirius and Regulus have been out of contact ever since Sirius ran away from their childhood. However, with the death of their mother, Sirius finds himself in the passenger seat of Regulus' car and heading towards London. Between new and old trauma, popped tyres and green paddocks, Sirius comes to realise that Regulus might not be so bad-but just what waits for them in London?