Sometimes even the smallest step can be the culmination of an epic journey. This program analyzes the long, painful, and ultimately euphoric struggle a child undergoes to roll, sit up, crawl, fumble around aided by furniture, and finally take one giant leap for humankind. Enthralling footage of adventurous, rapidly developing babies shows how they build muscle power and coordination, practice rhythmic kicking, deal with the weight of their large heads, adopt their own customized crawling styles, learn to climb stairs, and, even more importantly, learn to balance on two legs. Viewers discover how mental mapping skills and a crucial, built-in fear of falling come into play.