Wingsuit pioneers Jeb Corliss and Iiro Seppanen take on their biggest challenge yet… flying through a mountain cave called Heaven’s Gate. The ride of a lifetime as elite wingsuit athletes head to China to take on a gigantic mountain cave. Wingsuit flying is the extreme sport which allows humans to soar like birds. The suits add surface area enabling them to gain significant ‘lift’. No one is under any illusions as to the difficulty of the task; man’s age-old dream of flying unaided has been marked mostly by failure and death. The journey leading up to the big day has been a long quest, as this group of close friends push each other to their limits and beyond. Can they conquer Heaven’s Gate?