The Korean drama,"Startling Step by Step," finale plot introduction: In the ending of "Step by Step," Concubine Yu did not commit suicide but chose to leave this world. In order to save her lover, she risked her life to search for the mysterious box and finally succeeded in finding the box with her lover inside. However, because Concubine Yu was seriously injured in the process of searching for the box, she had to leave this world so that her lover could successfully obtain the box. After Concubine Yu left, his lover also successfully obtained the box and returned to his country with Concubine Yu's relics. They spent the rest of their lives together and supported each other forever.