Alienoid: Return to the Future (Korean: 외계+인 2부; RR: Euigye+in 2-bu; lit. Alien+Human Part 2) is a 2024 South Korean science fiction action film directed by Choi Dong-hoon, starring Ryu Jun-yeol, Kim Tae-ri, and Kim Woo-bin. It is the second part of 2022 film Alienoid and tells the story of humans and monks trying to save everyone by returning to the present while hidden secrets are revealed in the fierce battle for the new sword.