It's about the adventures of 2 agents of the T.I.A ("Earth-air" Investigating Technicians) who are called Mrotadelo and Filemon.They usually get the cases from their boss called "Super" (nothing special XD) and sometimes they get help from Professor Bacterio,a crazy scientist with loads of beard
Mortadelo (guy in black) is a special man who can become/disguise anything he wants (a fly,a clown,a cop,etc....),thou sometimes he fails on what he disguises or things doesnt goes the way he wanted XD
Filemon (dont confuse with Digimons XD) is the brain who always goes with Mortadelo..he thinks he's also smart but also fails sometimes XD..
Latest comics about these 2 are based on actual real life stuff,like the money crisis,olympics or popular people from the sports world or others
you can search "Mortadelo Filemon Intro" on youtube and find the animated cartoon's opening,wich includes their most popular cases in 24 min like episodes,just No Ending at all...or just click here (it's in,obviously,spanish) [link]