All because of a brain is a story that was created in an Italian role-playing game. The story is about two boys, Adam and Sam, who know each other through a social media. They have ups and downs, between jealousies, arrests. They live in New York, come from two different situations. Adam, raised by a wealthy family and Sam, raised by a family where only chaos reigns. Between the age difference, and ex who emerge when they least expect it, the two decide to go and live together. But this step seems increasingly difficult for them to reach it.