Sword of Sarasen.

Yoo-na, who had nowhere to go, lives with Allan, a foreign worker, at a small glass factory. Meanwhile, the owner of the factory entrusts Eun-ji, whom he sponsors, with the factory's accounting. Looking at Eun-ji and Allan, Yoo-na is confused as she recalls her past memories. President Kim, who has power in the factory, bullies Allan and the boss tries to rape Yoo-na. Having a lonely and hard time, Yoo-na and Allan get close to each other and new events occur with the knife of Sarasen, the only collection that Allan cherishes...