On March 11, 2004, during the morning rush hour, several bombs ripped through four commuter trains in the Spanish capital, Madrid. The simultaneous, coordinated blasts killed more than 190 people and injured almost 2,000. The Madrid bombings were the first in a string of violent attacks on European soil in recent years - from London, Paris, Brussels and Nice to Manchester, Barcelona and Berlin. Filmmaker Paula Palacios goes on a journey across Europe to uncover the stories of Muslims who lost loved ones in armed attacks and to find out how these attacks continue to affect the lives of Muslim communities.