Howard (Will Smith) is a successful advertising company manager. He has been married to his wife Amy (Keira Knightley) for many years and they have raised this lovely little daughter together. An accident took the life of the little girl and also led to the breakdown of this happy family. Amy chose to leave Howard. The successive blows made Howard fall into despair. He had no time to take care of the things in the company. He buried his head in writing letters all day. The recipients of these letters were "love", "time" and "death". The company's competitors found Howard and hoped to acquire his advertising company, which meant that everyone in the company would get a lot of money, but Howard refused this request and was still immersed in writing letters. Howard's decision annoyed several colleagues in the company, and they decided to join forces to plan a conspiracy to prove that their boss was crazy.