Synopsis: The hero played by Jim Carrey decides to say "Yes" to any request or invitation within one year. Unexpectedly, he won $45,000 by mistake, got a nursing degree, traveled around the world and had a romantic love story. Of course, this infinite possibility brought by always saying "yes" sometimes makes him laugh and cry. Karl Allen, played by Jim Carrey, has reached a bottleneck in his life, career and love-a lot of restrictions and troubles, and Karl has lived in the same way for at least three years. And all this is because his girlfriend abandoned him and threw herself into the arms of others. His good friend Pete tried his best to get Jeancard back to normal life, but Carl still closed the door like a hermit and refused all invitations. When he missed Peter's engagement party because of his own fault, Carl was determined to completely change everything about himself. At this time, one of his friends invited him to participate in a reality TV show. The challenge of this reality show is that Carl can't say "no" to anyone or anything in a year. Generally speaking, he can only say "yes" but not "no". Because according to the host's theory, saying "no" means rejecting others, rejecting others means rejecting yourself, rejecting yourself means rejecting life, and refusing life means committing suicide. Urged and lured by Pete, Carl Allen took part in this TV program. If the challenge is successful, Carl is waiting for a huge bonus and all the expenses of traveling around the world. If the challenge fails, for Carl, he will return to his already messy life again, and the situation will only get worse. Carl, who participated in the program, was in great trouble because he could not refuse any request. He often meets some requirements that make him feel ridiculous. To this end, he participated in various courses and trainings. He studied guitar, took a Korean class, studied hard to fly a plane, and was even invited to take a course to overcome sexual dysfunction. It is also because of the answer of "good, good, good" that Carl began to have a new understanding of life. Accepting other people's requests has brought infinite possibilities and various opportunities to his life, and his life is gradually changing. After a year of laughter and troubles, Carl not only got a promotion and salary increase, but also met the lovely girl Alison. Not only did he receive a bonus of $45,000 by mistake, but he also got a nursing degree without knowing it and traveled around the world in a daze. Of course, Carl finally won Alison's heart and they both fell in love. However, for Alison, there is another problem before her. How did she know that her "Mr. Nice guy" said "good" because he loved her, or because he was used to saying "good" to everything?