Bob, a feckless bachelor, promised his mother that at her death he would care for his schizophrenic younger brother D.J. but he becomes apprehensive when the time comes. Facing up to his responsibility, Bob tries his best, but his set ways and D.J.'s erratic behavior mix like oil and water. Giving his promise one last shot, Bob takes D.J. on a fishing trip to the secluded lake where they vacationed as children. Here, the rush of memories transforms both men.