After taking a five-year break from commercial filmmaking following studio interference during the making of The Red Eagle, Wisit Sasanatieng has now written and directed รุ่นพี่, a horror/romance film aimed at a mainstream teenage audience. รุ่นพี่ is Wisit's third ghost film, as he previously directed The Unseeable and wrote Nang Nak.
The central character, Mon, studies at a Catholic school in present-day Bangkok, though she can sense the ghost of a senior student who studied there before it became a convent school. He tells her that the building's original owner was killed fifty years ago in mysterious circumstances, and they investigate the murder case together.
With its flashbacks to half a century ago, รุ่นพี่ continues Wisit's fascination with period detail, as seen previously in Tears Of The Black Tiger and The Unseeable. It features malevolent ghosts and some horrific moments, including an unsettling sub-plot involving Mon's schoolfriend, though it combines this (quite incongruously) with a budding romance between Mon and the senior ghost.
Wisit has also directed Citizen Dog, the music video เราเป็นคนไทย, the art film Norasinghavatar, and a segment of the anthology film Sawasdee Bangkok. He also wrote the outline for Slice (directed by Kongkiat Khomsiri), and he designed the posters for the Bangkok International Film Festival in 2008 and 2009.