This is the true story of the life of Sister Bear, or Grizzly 399, her cubs, and her interaction with wildlife photographer Thomas D. Mangelsen. He explains, "These aren't just any bears; they might be the most famous grizzlies alive today on the planet. For all these people, catching a glimpse of them is the thrill of a lifetime." The story is rendered in Noah Text(R), a specialized text designed to to improve reading skills by highlighting sound part within words and providing clues to vowel sound pronunciation.