After their amazing adventure to mini island Luigi has got enuff starcoins to take the boys to the fanimanal and fantastic underground block city. Where their are dozens of breakable blocks everywhere where they meet the nice Koopa Troopas uncover a uniqe and special,wonderful breed called a Gumby and build their block houses and set up mini play area by dizining the blocks and adbenturing and exploring around every obstycle and lovley sight around as they get lots of coins and starcoins to build up money for their trip back to iceland all is fun and amazing exiting for everyone, but when Markio and Luigi can't find Mawio their fun adventure gets out of hand, but when they finally find him their all renited again and countinue their last few days of vacation around the amuzing city they have the best time ever and learn important life time lessons and learn that the best place anyone wants to be is back home as they miss their peacful and lovley Iceland and is deeply happy when their family returns!!