Jian is a counter terrorism agent who blends his skills as a martial artist and clairvoyant to bring the world's most nefarious individuals to justice. This lone wolf is is forced to make an unexpected detour to Los Angeles upon receipt of the devastating news of a cover up surrounding his brother's alleged suicide. With the reluctant help of LAPD detectives, Abby, Carl, and Captain Duke, the unlikely group become involved in the investigation. Jian and Abby fight against a high-tech criminal looking to exploit the brothers' gifts in his own quest to power.

故事以前作《科学小飞侠Crowds》的后续剧情展开。距离“立川事件”已经过了一年，当初贝尔库·卡切赋予尔乃美家累的力量“CROWDS”在日本首相菅山的推广之下已在人类社会当中广泛普及。然而仍然存在着对此感到不满的人们，此时菅山遭到不明人士的袭击，GATCHAMAN的全新战斗就此揭开序幕。

我们，想知道关于我们的事。 关于在我们的“国家”，没有“社会”的事。 关于“社会”与“世人”生活在不同世界的事。 情与理。 重要的并非“烦恼”，而是“思考”的事。 现代人过于“快速”，呼吸也是既浅且快。 “我们”并不擅长变得闲适而深刻。