Arsenal's Jack Wilshere (Red) battles for the ball against Barcelona's Xavi (Green).
The UEFA Champions League or the "Champions League" for short, is an annual continental club football cup comprising of Europe's most elite teams. It is the most prestigious club competition in European football, and is the one of the most watched sporting events annually, drawing millions of viewers worldwide. Football clubs from Europe's major leagues battle it out to be crowned UEFA Champions at the end of the tournament, or more famously known as the "Champions of Europe", or the "Kings of Europe".
The reigning champions are English team Chelsea FC who won the 2012 finals defeating Bayern Munich in a penalty shoot-out.
Short intro
The UEFA Champions League is where Europe's most elite football teams pit of against each other to see who is top dog. This short video on top should give you an idea on what the Champions League is all about.