The book is a retelling of the biblical story of Noah, focusing on themes of faith, obedience, and divine promise. It narrates how Noah, a righteous man, is chosen by God to build an ark to save his family and pairs of every animal species from a great flood meant to cleanse the earth. Through vivid illustrations and simple language, the story emphasizes the importance of trust in divine guidance and the renewal of hope, culminating in the symbolic appearance of a rainbow as a sign of God's covenant with humanity.