Ai Sayama is a Mom who has been sexually frustrated for a long while.
One day, she witnesses her son Takashi being bullied by classmates, and she invites Tanaka, the leader of the bullies, to parley with her.
She attempts to persuade Tanaka to not to bully her son anymore, but Tanaka counters with some ridiculous sexual counteroffer. Much to his surprise, Ai not only agrees, but she is strangely excited about it…
Things not end there, as the sexual demands ramp up and evolve in to the final epic gangbang.