Patriotic university student Youngwoo and his friends, led by their teacher Lee Sung, along with a British friend bid farewell to their families and become freedom fighters in Manchuria fighting against the Japanese occupation around the Tumen River.

Kim Seok-hun
as Nam Yeong-u

Hwang Hae
as Seo Chang-hwan

Moon Jeong-suk
as Kim Yeon-hwa

Um Aing-ran
as Kang Gyeong-ae (Young-woo's Lover)

Jang Dong-hwi
as Wakino (Military General)

Heo Chang-kang
as Min Tae-yeong (Yeon-hwa's Uncle)

Park Nou-sik
as Woo Byeong-cheol

Lee Dae-yub
as Kim Hyeon-gu (Yeon-hwa's Younger Brother)

Kim Hye-jeong
as

Hwang Jeong-sun
as Jun-rye (Young-woo's Mother)