In the fall of 2014, a youth movement in Hong Kong staged the biggest political challenge to China since the Tiananmen Square uprising in 1989. Mass student-led protests occupied major streets in the heart of the city for 79 days, calling for democratic open elections. Since its handover from Britain to China in 1997, Hong Kong has been governed under the principle of "One Country, Two Systems," giving it freedoms unseen in the mainland. Still, Beijing says Hong Kong can only vote for chief executive candidates that are pre-screened. The city's youth movement signals a political awakening of a new generation. Who are they? And what are their goals and challenges ahead? Kristie Lu Stout explores what's become known as the "Occupy Generation."