Watch The Power of Two (2012) : Full Movie Online Free A story of twin sisters, two cultures, and two new chances at life. Inspired by their 2007 memoir, “The Power Of Two” offers an intimate portrayal of the bond between half-Japanese twin sisters Anabel Stenzel and Isabel Stenzel Byrnes, their battle with the fatal genetic disease cystic fibrosis (CF) and miraculous survival through double lung transplants.