The Divine Son-in-Law

His adoptive mother, with lung cancer, visits the live-in son-in-law. He pleads with the Sutton Matriarch for 500,000. The Matriarch and Sienna Sutton refuse, give 20,000, telling him to kick his mother out. He leaves with his mother. He watches an old man get hit by a car. The old man becomes his sworn brother, reveals his identity as the Great Sage, Equal to Heaven, and passes on divine powers. He leaves a secret manual and three strands of hair for three saves.