In the first episode the main characters come across a group of slaves. One of them is Morgiana.

In the sixth episode a freed Morgiana travels with a caravan of traders. Upon hearing the a group of slavers is operating nearby she goes out to fight them. Of course she gets captured. This one is a bit darker.
http://mangafox.me/manga/magi_labyrinth ... 29/15.html" onclick="window.open(this.href);return false;
http://www.youtube.com/watch?v=dLrOPV2Z0uM