Not the most believable of story lines with a quite wealthy husband, his mom, his wife, his son and a sort-of adopted/taken-in ward of a 17 yr old female (looked more like 14, but actress is in her 20s - good for her). Add in a sort-of live-in lifetime friend of the wealthy husband, and a recently hired live-in 21 yr old Russian tutor for the son.
Rough plot outline: Husband's male lifetime friend has feelings for husband's wife; the wife is having a midlife boredom crisis and vacillates between leading on the friend and now adding the much younger tutor to her interests. The husband may or not be aware of all this throughout most of the film - not too clear. Add a family doctor who also has some interest in the wife as well as acting as an emissary for an older male wanting the 17 yr old for his wife (and is willing to pay the mercenary doctor to succeed in convincing the girl). To further complicate, the girl also has interests in the Russian tutor while said tutor doesn't know what he wants. Phew! As it turns out the wife gets her explosive fireworks to relieve her boredom (only not totally what was expected).
Acting was a bit mechanical; scenes too set-up, not believable; English subtitles were OK.