Manga creator Tsukasa Hojo's debut live-action film. 'Angel Sign' is Hojo's debut as a director, which is made by editing a number of short films into one movie. Hojo directs the "Prologue" and "Epilogue" stories, while a different director will handle each of the other stories, which were selected in Silent Manga Audition. All the stories will have no spoken lines, and will only have video and music.

在第二季中，作为现代刑侦关键力量的【警视厅SSBC强行犯系】面前，将出现比前作更加棘手、更加难以攻破的恶性犯罪案件。随着高度保密的通讯应用程序、利用AI进行的伪装操作等手段不断出现，犯罪也变得更加巧妙、覆盖范围更加广泛。面对这些疑难案件，搜查人员将以结合最先进数字侦查技术与扎根现场、坚持不懈的传统刑警办案精神的“终极混合式搜查”展开挑战。那些仅靠数字技术无法触及的真相，将由刑警们脚踏实地、锲而不舍的执念亲手揭开。