In the Honggildonggeon, Gildong has some doubt about the existing system but cannot change it. Such an image of him has been recognized as contradiction or limitation in previous studies. And the issue of unity in the narrative before/after his overseas expansion has been long examined by previous studies. This paper reads the Honggildonggeon from the perspective of structuralism by using Algirdas Julius Greimas`s Actantial model, in order to deal with such an issue. From the perspective, the Honggildonggeon shows the stringent conflict between one narrative of self-approval by a son of a concubine and other narrative of embracement by power system through confrontations against the others, leading to double semantic structure. Although Gildong experiences the conflict with his father, a minister Hong, because of the Hobuhohyeong program, this conflict is consequently converted into confrontations against his father`s mistress Choran and the assassin Teukjae. In this process, Gildong becomes a contradictory character, in that he is opposed to father, while helping him. Moreover, Gildong initially stands against his nation but later belongs to it through the same semantic structure and character relationships even in national and social spaces. In addition, such a double semantic structure continuously lasts from pre- to post-overseas expansion, which comes to create a unity structure. In the latter half of the work, Gildong shows the development of the narrative, the self-approval by a son of concubine, through his growth process in which is married, becomes Bongsason and King of Yuldoguk, while otherizing opponents in the confrontation and being identified with Joseon, a large power. Such identification, the result of tough confrontations, shows that Gildong`s growth is consequently embraced by his family, nation, ethics of society and power. The Honggildonggeon deepens this issue by raising the question of appointments of sons of concubines, furthermore, that of selection of talented people in Joseon, and the value of it resides in such questions.