Two Japanese tourists board a train on Barcelona's L1 metro line. Upon arriving at Arc de Triomf station, they notice someone rummaging through their bags. It's a young man wearing a Manchester United shirt who, realizing he's been caught, abandons the theft and flees. Two security guards try to stop him, but he assaults one and escapes along the train tracks. He runs to the next station, Marina, where he re-enters the platform, covered in black dust, and flees again. He's a "two-time offender," which in police jargon means he has two prior convictions, and two plainclothes officers from the Mossos d'Esquadra (Catalan police) eventually arrest him, placing him against the wall and handcuffing him, while a third security guard, trembling, explains that he had to use pepper spray to subdue him.