Helen Keller heard footsteps on her front porch and thought it was her mother. Miss Sullivan walks up the porch and becomes Helen's teacher.
Miss Sullivan gives Helen another doll and tells her they are the same. Helen gets confused and throws the doll Miss Sullivan gave her and keeps her rag doll.
Miss Sullivan walks Helen to a well and tells Helen that this is water, and Helen realizes that the liquid running over her hands is water. When she felt the water a light came to her, and opened a new door to the world to her.