Some details are not possible in real life

The house owner doesn't know who the tenant is, but is able to get full payment of the rent each month. 

The house owner and the tenant can have immediate exchanges of information through emails as if emails are the conveninent WeChat app that people always keep their eyes on it. 

A girl who is not influenced by her own mother for so long to change her job is willing to sacrifice her career for the sake of a stranger passenger.

The head of a private company holds no objection to his subordinates who sue his company for something that they cannot gain any benefit personally but would damage the reputation of the company.

A busy pilot captain managed to find time to travel nearly all over the world at his own expense to find the thin or non-existent evidence for a lawsuit that nearly has nothing to do with himself.  And his world tour doesn't seem to be subject to any international travel control.