一位70岁的老奶奶发现家人要把她送到养老院。在她深深的悲伤和毁灭中，她神秘地从20岁恢复了外貌。

George is a diabetic father who moves next door to daughter Zoe Dalton. Zoe seems to have it all, including successful husband Chris, but when she hires an au pair, Sandrine, the beguiling young French woman triggers an unsettling shift in the household as instincts and suspicions arise, hinting at hidden agendas.

大盗张彼德（刘德华）得知生命只剩四周时，决定为死于黑道老大（李子雄）之手的父亲报仇，为此他精心设计打劫了黑道老大的运输公司隔壁的财务公司，并挟持人质引来因得罪上级被转调文职的高级谈判专家何尚生（刘青云）。　　何尚生在同张彼德展开追逐时，虽屡战屡败，却渐了解到黑帮老大实则借 助运输公司做非法走私珠宝的生意，于是同张彼德化敌为友，携手同黑帮势力展开了斗智斗勇的游戏。而张彼德在逃避何尚生追逐的过程中无意结识女孩梁婉婷（蒙嘉慧）后，在生命的尽头获得一份浪漫奇缘。

In 2050, Earth has become a dry and desolate place. Fighter pilot Nova is forced to travel back in time to prevent a devastating environmental disaster, however an unforeseen side-effect of time travel makes Nova young again and she crash lands into 2025 as a twelve-year old. Nobody seems to take her and her mission seriously, except for Nas - a neglected teen who tries to keep...

　　Based on actual events of American serial killer Edmund Kemper, who murdered his grandparents at age 15 and, after being paroled for that crime, killed eight women in 1972 and 1973 including his own mother.