Mature Men Marry is a sequel to the box office blockbuster Mature Men I Love You. Nicky and Alex have been in love for three years, but Alex has to go back to work, a new advertisement is waiting for him, and 20-year-old Nicky is going to study in college. Alex realized that he decided to marry Nicky despite his different ages, but he didn't know how to tell her. So he decided to give her a surprise. When they came to Paris, they ate in a luxury restaurant and spent the night in a club. Alex took Nicky on a boat trip and said to Nicky, "I'm sorry, but I want to get married." Nicky agreed, and they began to prepare for the wedding happily. At the same time, the lives of Nicky's friends changed: Ollie became a designer, Erica and Gio became a couple, and Bonnie and Philip had their own children. The romantic story continues. .....