Inspired by a true story that touched millions of hearts, Baby Udon follows the journey of Fanny Kondoh, a young Indonesian woman who falls in love with Hajime Kondoh, a Japanese man who comes to Indonesia for work. After getting married, Fanny and Hajime begin building a life together, embracing both its joys and challenges. As they struggle to fulfill their dream of having a child, they are faced with one heartbreaking trial after another, testing the strength of their love, especially when Hajime is diagnosed with cancer.