De l'autre côté du mur

An headed-to-ruin couple buys a house for a fresh new start. Since they moved in, the wife doesn't want to have sex with her demanding husband. One day, changing the light bulb of the stairs leading to the basement, he finds out a hole in the wall, which will upsets their intimacy. After many restless nights, the man decides to fill to hole... to find it out wide open, a few days later. Then, he decides to uncover what lies beyond the wall. Is that a good idea ?