使徒行者第四部

乐琦（郭羡妮饰）是香港警察保安科的督查，她美貌、身手、智慧并重，屡屡与恐怖分子打交道。今次，面对恐怖分子的炸弹勒索，她亲自部署了围剿行动，但在行动中汽车经纪坚强恰巧路过，使得行动受阻，最终虽然拘捕了恐怖分子头目和救回了坚强，但部分恐怖分子却成功逃脱了，保安科更是损兵折将。为了补充力量，同样身手不凡的美女警官丽花（佘诗曼饰）和宝儿（杨思琦饰）被调往了保安科，三人在随后的交往中建立了深厚的友谊。一日，坚强在将新车交付客户时又遇上了恐怖分子炸弹袭击，更因丽花想帮他解释越帮越忙而遭到车行解雇。正好女友此时又抛弃了他，银行又收回了他供的楼房，坚强的人生跌到了最低点，更视丽花为命中克星。乐琦觉得不能再让这些恐怖分子继续逍遥在外，于是决定冒一次险……。The 'Owner House' has been vacant for several years because of its very dark history but with the recent series of murders it has been taken to the next level. A family who just moved in has been murdered causing the curiosity of a group of friends to get the best of them. Deciding to break in and investigate with hand held cameras, would be the worst decision of their fun fill...。任大望一心想把喜好天文的儿子任小天培养成钢琴演奏家，为此父子争吵不断。一天，神秘外星人莫扎特意外出现，从此，莫扎特帮助任小天开启了和爸爸“斗智斗勇”的生活。令任小天没有想到的是，莫扎特来到地球竟另有任务……。