Hottest Summer is a new adult game that follows the story of Sam, a senior high school student living in an Asian country with his beautiful mother Riona and sister Juno. Sam is an average student, 20 years old, who is often the target of bullying from Jim and Jun, two brothers at school who are vying for the affections of Sam's childhood friend Angela and his sister Juno.
Before summer break, unexpected events begin to unfold that lead Sam, Angela, and Juno down a path of lust and intrigue. The story progresses based on the choices Sam makes along the way, and the consequences of those choices will shape the outcome of the game.