A downhearted 40-year-old man needs to step outside his safe zone to unlock the mystery which his late girlfriend left to him. While travelling, he meets a lively 20-year-old guesthouse attendant, there she helps him find more clues to the mystery and also to his lonely life.
Unfortunately the movie Heartbeat is not yet available on HBO Max.
| Production | Taddanai Praman | Associate Producer |
| Production | Kachornchai Vajirapisutsopin | Post Producer |
| Production | Sunjutha Witchawut | Executive Producer |
| Production | Kachornchai Vajirapisutsopin | Producer |
| Crew | Wisit Sasanatieng | Creator |
| Writing | Jade Bunyoprakarn | Screenplay |
| Production | Thanakorn Puriwekin | Executive Producer |
| Production | Sudkatd Luancharoen | Production Designer |
| Production | Birathon Kasemsri Na Ayudhaya | Executive Producer |
| Camera | Tanai Nimcharoenpong | Director of Photography |
| Sound | Thossaphol Sangsuwan | Original Music Composer |
| Production | Panot Udom | Associate Producer |
| Production | Poomchai Wacharapong | Executive Producer |
| Production | Chukiat Palagarom | Associate Producer |
| Production | Pornchai Wongsriudomporn | Executive Producer |
| Camera | Sarawut Chuparkpanich | Director of Photography |
| Editing | Dog Back Dee | Editor |
| Writing | Jatuporn Boonkode | Screenplay |
| Writing | Pirat Tatone | Screenplay |
| Costume & Make-Up | Buangoen Ngamcharoenputtasri | Costume Designer |
| Sound | Kongyot Vongvikorn | Original Music Composer |
| Writing | Chiangmun Ngamkanokwan | Screenplay |
| Production | Utai Khunmkong | Producer |
| Directing | Jade Bunyoprakarn | Director |
| Production | Sa-Nga Chatchairungruang | Producer |