It’s 2010, and a series of deadly tragedies at factories in Bangladesh paint H&M and the fast fashion industry in a negative light. In response, the company doubles down on sustainability, launching a new eco-friendly line. Meanwhile, Forever 21 goes to court over copyright infringement allegations, and Zara invests in technology to streamline its supply chain. But there’s a new player on the scene, Chinese company Shein, and their online-only business model is about to change the game.