INSPIRED BY THE TRUE STORY On the eve of the Challenger explosion in 1986 one engineer goes to the extreme to stop the launch. This hot-headed engineer makes a desperate race against the clock to call off the billion dollar multi-delayed Challenger launch, convinced the O-ring seals will fail and kill everyone on board. The Company, Marshall Space Flight and NASA made a business decision. He made a human decision.
1950年代，我人民解放军海军某鱼雷快艇中队长张敏（王心刚 饰）及战友李雄（张勇手 饰）带领“九九”号快艇全体战斗员到远离大陆的岛礁“鬼屿”设伏。因为此前国民党舰队依仗自己吨位大、火力猛，经常骚扰我东南沿海。敌李舰长（刘江 饰）常以此为傲。但我海军上校（里坡 饰）和沿海军民决心以弱胜强，教训狂妄的敌海军。几天后，敌舰又来滋扰生事，我快艇中队出奇不意出现在“鬼屿”地带，敌人猝不及防赶紧撤退。但在后续的海战中，“九九”号不幸被敌炮火击中，战士们含泪与快艇告别。张敏和刘涛（王毅 饰）受伤，大家忍着伤痛和饥饿，终于飘流到一个小礁上，与同时逃到小礁上的敌军溃兵展开了激烈的战斗，最终全歼了敌人。战士们划着缴获的小舢板，向祖国的方向驶去......
Part 1, "First Steps," examines the factors that caused us to split from the other great apes. The program explores the fossil of "Selam," also known as "Lucy's Child." Paleoanthropologist Zeray Alemseged spent five years carefully excavating the sandstone-embedded fossil. NOVA's cameras are there to capture the unveiling of the face, spine, and shoulder blades of this 3.3 million-year-old fossil child. And NOVA takes viewers "inside the skull" to show how our ancestors' brains had begun to change from those of the apes.