Lake Consequence (movie, 1993)

Irene, a thirty-something housewife with a successfull husband and a young son, has her life thrown in a spin when she becomes attracted to Billy, a member of a landscape crew outside her house. When Irene's husband and son leave for a weekend fishing trip, Irene wanting to see Billy, gets locked in the back of his trailer and ends up at remote Lake Consequence with Billy and his girlfriend Grace where they take Irene on a trip into the nearby town to a Chinese New Year Festival, and through a series of adventures they bring out the repressed sexual needs Irene has been holding inside for a long time.