A Week of Deserted Island Sex with my Step-Mom

A passenger ship suddenly encounters a big storm and capsizes. - Miraculously, there are two survivors - a (step)mother and (step)son, who aren't injured, but are washed ashore and stranded on a deserted island. - The young man rushes to explore the unknown island, attempting to find ways to survive while awaiting rescue. - However, this rare situation gives him the opportunity to be alone with his beloved (step)mother and seduce her. - He uses the innocent game of Rock Paper Scissors to force his initially reluctant (step)mom into lewd acts. - What life choices will the two of them decide upon after a week of being stranded alone on this island?​