A young scientist accidentally travels back to the medieval era and must retrieve a valuable artifact to return to the present, but upon succeeding, they discover that it has altered the future, leading to a new mission with their medieval noble friend to set things right.
Protagonist: A young, adventurous scientist who is determined to find a way back to the present; Deuteragonist: A resourceful medieval noble who helps the protagonist navigate the unfamiliar and dangerous medieval world.
The protagonist learns that in order to return to the present, they must retrieve a valuable artifact from the medieval era, leading to a perilous journey filled with obstacles and challenges.
In the end, the protagonist and the noble successfully retrieve the artifact and make it back to the present. The experience has changed both of them, and they form a strong bond that transcends time. The time machine is destroyed to prevent any further mishaps, and the protagonist decides to embrace the adventures of the present instead.
Twist: Upon returning to the present, the protagonist discovers that the artifact they retrieved has altered the course of history, creating a dystopian future. Now, they must embark on a new mission to set things right, with the help of their medieval noble friend.