During the Gryffindor vs Ravenclaw Quidditch match, a bludger meant for Sirius accidentally strikes his brother Regulus, knocking him unconscious in a terrifying fall. Sirius desperately tries to save him but arrives too late, though Madam Hooch slows Regulus's descent. The aftermath brings Walpurga Black to Hogwarts, where she coldly dismisses Sirius and takes Regulus home. Her cruel treatment of Sirius, calling him weak for showing emotion and denying him basic compassion, reveals the toxic dynamics of the Black family and deepens Sirius's trauma.