Lee Seung-jae loves a women living in a next door, So-hee and sends letter to her, since he is a post officer. However, So-hee leaves her house for a new love and Seung-jae stops sending her letter to go to Mars.
You can now watch A Letter From Mars online on the following streaming providers in the United States.
| Directing | Kim Jeong-kwon | Director |
| Writing | Jang Jin | Writer |
| Sound | Lee Jae-jin | Music |
| Writing | Jo Jung-hwa | Writer |