Santiago is a gray man who works as a supporting actor. However, his attitude towards life will change when he lodges his thirty-year-old son Guillermo in his house for a few days. "Go away from me" is a family masquerade ball, of encounters and disagreements between two congenital egoists: a compulsive liar, who manages to alter the already fragile mental state of the relatives that surround him, and a supporting actor who has come Unless, he suddenly discovers that his life is a lie.