年幼失聪的英俊（崇喆饰）立志当上厨师努力不懈，与主厨的女儿安心（林昭婷饰）相恋，历经重重的挫折和挑战。好友耀飞（孙政饰）隐瞒自己的抑郁症当上医生，却在职场中面对种种的困境，与女友紫阳（洪丽婷饰）追爱之路也处处触礁。英俊的祖母君红（刘玲玲饰）追求黄昏之恋，却遭老板骗财骗情感，以至面临人生的大危机……

　　A group of tired commuters have caught the last train home, ready to hop into their beds for the night. However, their train soon veers off-course and crashes into an abandoned tunnel. The three surviving commuters; withdrawn mother Yi Ling, her son Lucas, and student Janice, are forced to band together and survive the night, as well as avoid the mysterious monster hunting them. Yi Ling still suffers from flashbacks to the car accident that killed her husband and nearly took Lucas` life too. When Lucas is snatched away by the monster, her maternal instincts are tested, and Janice`s ideas of family are challenged as she remembers her difficult relationship with her estranged father. Back at the subway control headquarters, the engineers do their best to make sense of the situation and rescue the survivors.

　　爱诗是一个在人间游荡了20年的灵魂。小时候的一场车祸让她意外离世，但她并没有选择轮回，而是陪伴在家人身边。直到一个偶然的机会，爱诗进入到弟弟爱翔的身体里，利用在爱翔身体里的七天，她踏上了一场难以忘怀的“人生”旅程。