Pakistan is under attack from within. An estimated 35,000 Pakistanis have been killed in extremist violence since 2001. Bombings are a constant threat and journalists, politicians and activists, along with anyone who speaks out against intolerance, risk their lives. Activist Syed Ali Abbas Zaidi has dedicated his life to challenging the complex religious, economic and social divisions which threaten to strangulate Pakistan. From café culture in Islamabad to Taliban rehabilitation in Swat, we follow him on his anti-extremist mission across Pakistan. But will his passion be enough to change entrenched attitudes and beliefs?