What is "necromentia"

Necromentia is a 2009 horror film directed by Pearry Reginald Teo. The screenplay concerns three men who have their lives turned over by the existence of a tattooed Ouija Board, which opens the gateways to other dimensions. Hagen keeps the corpse of his lover in his house, hoping that one day she will come back from the dead as promised. When he meets a man named Travis, he learns that maybe he could venture into hell and bring her back from the dead himself.