Wikipedia site wrote:There exist familiars who have the power to grant one wish to a chosen girl. However, in exchange, that girl must then become a Puella Magi, a girl with magical powers, and fight against witches, evil creatures born from curses that are responsible for murders and suicides. In the city of Mitakihara, a schoolgirl named Madoka Kaname and her friend Sayaka Miki are approached by a familiar named Kyubey, who offers to grant their wishes and make them Puella Magi. Another Puella Magi named Homura Akemi tries to prevent Madoka from making such a deal. Madoka soon learns that there is a dark side to Puella Magi.
The spin-off manga, Puella Magi Kazumi Magica: The Innocent Malice, follows a girl named Kazumi who has lost her memories after being allegedly kidnapped, who fights against witches with her fellow Puella Magi, Umika and Kaoru.
Puella Magi Oriko Magica will take place before the anime series, and features two of the main series' Puella Magi, Mami Tomoe and Kyōko Sakura, encountering a young Puella Magi named Oriko.
So other than the pictures related to the plot. I want to share everyone just how EVIL Kyuubey is, if you ever watched the full 10 episodes and the posted manga online.
The second video is one of my current favorites as this is Mami Tomoe's transformation theme that was first shown in Episode 1 and in Volume 1 Chapter 1 (or was it Chapter 2??) in the manga version.