A plumber in your house means you have some problem with the pipes, at least most of the times, while in Mario's universe, there might be a princess locked in a cage somewhere. He used to be a humble worker in love with Peach, the King's favorite daughter, who thought he would never have the chance of talking with her. Life works in strange ways and what seemed impossible became a possibility after he accepted to go on a journey, something he never tried before, to rescue her from the evil Bowser. A road full of adventure and puzzle challenges is waiting for him, where there are monsters and creatures he never dreamed about, waiting to take him home and make a dinner out of our hero. It's unknown if he is going to keep the girl after the mission is completed, but at least he can become rich and stop to be a plumber with all these gold coins randomly scattered. Depending on the games you are going to choose, you might have the help of friends like his brother Luigi or the little dinosaur of the same color called Yoshi. After saving the princess, it is always possible to try something else, like his car games with Karts and trucks, or new adventures to slay more monsters and bosses, without having to save anyone from their lairs. Mario shows us how strong and important someone can be with courage and, of course, strong fists and good platform skills.
Resources: Mario Games