The Nage-no-kata were established to help understanding of the theoretical basis of judo and learn the processes involved in "Kuzushi", "Tsukuri", "Kake" in other words, how to assume the correct position for applying a throwing technique once you've broken your opponents balance and how to apply and complete a technique. The kata consist of 15 representative throwing techniques, three from each of the following five categories: Te-waza, Koshi-waza, Ashi-waza, Masutemi-waza and Yokosutemi-waza.
Each technique is executed from both sides.
The video explains the main points of the 15 techniques together with some of the common mistakes. It also includees historic footage dating back to c1930 of a demonstration of the Nage-no-kata by Shuichi Nagaoka, 10th dan, a judo master known especially for his Uki-waza. There's also a demonstration taken from the 1996 All Japan Judo Championship.