Mary zit in het laatste jaar van de middelbare school. Over een paar maanden studeert ze af en ze krijgt te maken met veranderingen op het gebied van het leven, de liefde en vriendschap. Ondertussen gebeuren er vreemde dingen die willekeurig en zonder reden lijken te zijn.
Nee, helaas is Mary Is Happy, Mary Is Happy. nog niet beschikbaar op Netflix in Nederland.
| Crew | Pairach Khumwan | Cinematography |
| Directing | Nawapol Thamrongrattanarit | Director |
| Production | Aditya Assarat | Producer |
| Production | Pacharin Surawatanapongs | Associate Producer |
| Editing | Chonlasit Upanigkit | Editor |
| Editing | Chaitawat Thrisansri | Color Timer |
| Production | Rujirumpai Mongkol | Location Manager |
| Art | Manop Chaengsawang | Art Direction |
| Costume & Make-Up | Pacharin Surawatanapongs | Makeup & Hair |
| Sound | Akritchalerm Kalayanamitr | Sound Editor |
| Sound | Chalermrat Kaweewattana | Sound Editor |
| Writing | Nawapol Thamrongrattanarit | Writer |
| Production | Rasiguet Sookkarn | Production Designer |
| Costume & Make-Up | Phim U-mari | Costume Designer |
| Camera | Pairach Khumwan | Director of Photography |
| Sound | Somsiri Sangkaew | Original Music Composer |
