The Koryŏ dynasty is now defunct, replaced by the „Chosŏn” dynasty founded by General Yi. Unfortunately, soon after its founding, intriguers nicknamed the „Watchers„, appeared all over the realm of Chosŏn. And ever since, feud and disorder has sprouted everywhere. But this time, instead of the usual political contests and sneaky manipulations, armed warfare has become the rule. The influence of the „Watchers„ on some families has grown very strong and some whisper they have such extraordinary powers as allowing them to travel through time.

„Chosŏn” is a thematic sequel to „Koryŏ” set in the same uchronian and politico-steampunk universe, and gameplay is similar in the two games.