Throughout the recent months of protests against the extradition law amendment bill, film crews have been following and filming various officers who were playing key roles in different Police operations, in order to record on film the adversities they faced when executing their duties as well as their emotional journeys along the way. In the documentary, these officers working in different posts and different levels in the Force also provide moving personal accounts of what they and their families have been through during these challenging times. Filming of the documentary started when a riot started in Admiralty on the evening of August 31, 2019, and concluded on on December 24, 2019. Over a span of four months, the most dangerous , divisive and chaotic period in Hong Kong was captured.