Good Sisters Share

Ava Greenwood is worried about her sister's marriage, there are more fighting noises and less happy noises coming down the hall. Finding her once again rejected brother-in-law heading to watch porn in the basement, she offers to alleviate the tension. He refuses, but Ava is convinced this is the answer to all everyone's problems, including her own frustration with finding a decent partner.Justin loves his wife and children. He knows Cassie is exhausted from taking care of their four children all day, but he wants his wife. His sister-in-law has offered to relieve his tension, but that's a terrible idea. Right? But the more often Cassie is too tired, the more he finds Ava's offer of no-strings attached sex appealing.To give Cassie a break he sends her and the kids to her mom's for a week vacation. Leaving him and Ava alone. What can go wrong?