Wei is nowhere to be found one day before his grandma returns from her own strange missing incident. Wei's girlfriend desperately searches for his whereabouts and discovers that a little girl in red followed them before their disappearance. Based on true events and long-circulating urban legend in Taiwan.
Unfortunately the movie The Tag-Along is not yet available on HBO Max.
| Art | Frank Chen | Paint Coordinator |
| Production | Feng-Jung Chiang | Production Manager |
| Directing | Cheng Wei-hao | Director |
| Writing | Chien Shih-Keng | Writer |
| Editing | Ming-Sheng Kao | Editor |
