Bong-seon, separated from her father for many years without ever meeting him, travels to Japan to meet him. Choi-yong and Jang-chil accompany her to protect her, but upon arrival, the Federation of Koreans in Japan, eager to prepare a birthday gift for Kim Il-sung, sets its sights on Bong-seon's enormous inheritance. After much hardship, Bong-seon's group, with the help of Noh Jin-ah, an active member of the Federation, foils the Federation's wicked schemes and meets Bong-seon's father, Choi Gwang-jin. When Bong-seon announces she will use the inheritance for educational endeavors, everyone praises her.