The plot is very sparse, but what little plot there is.
The girls get naked repeatedly, a banana is sexually assaulted, the demented gardener is abused by someone who could be his daughter, and every murder suspect seems to have an endless supply of roofies or ecstasy or something.
Three sisters trying to track down their mother's killer.
The problem is that this film does not care about plot but instead strives to be a soft porn.
It makes the flashback scenes a bit hard to understand, as her primary asset is not something this actress was able to come close to.