On the First Beat is a TVB modern action series broadcast in June 2007.

The series is a direct sequel to 2005's The Academy. The main cast features Ron Ng, Sammul Chan and Chin Ka Lok from the original series and new cast including Michael Tao, Sonija Kwok, Joey Yung, Kenny Kwan and Kate Tsui. The story continues on with the two male leads in the series with their growth as young police officers with personal conflicts in their bonds as friends and romantic relationships. The drama is about the life of a group of Hong Kong police officers and cadets inside and outside of work.

A direct sequel, E.U. was produced and airred in 2009 continued with Ron Ng and Sammul Chan, alongside Michael Miu, Kathy Chow, Elanne Kwong, and Michael Tse.

李柏翘（陈键锋 饰），钟立文（吴卓羲 饰）在PTS警校毕业后，被分配到油麻地分区巡逻。柏翘照章办事，立文则热心冲动。立文经过反思，决定支持阿花（杨怡 饰）去日本读设计。柏翘在例行检查时，得罪了以张景峰（陶大宇 饰）和傻强为首的古惑仔，遭到投诉。“杀神”袁慧妮（郭羡妮 饰），对他进行了内部临询。某晚，蔼琳（薛凯琪 饰）和立文发现了景峰和傻强在进行非法交易。为了帮柏翘，蔼琳拉立文跟踪，却最终为救柏翘而牺牲。这对柏翘打击很大，苛责立文，两人暗生芥蒂。景峰却因卧底破案有功，升为柏翘和立文的上司。但其行事作风经常令两人难堪，矛盾重重。其中，还牵涉了景峰的妹妹念恩（容祖儿 饰）、前妻慧妮、其弟家富（关智斌 饰）以及立文的表妹文静（徐子珊 饰）