The pressure is building for Greg Heffley, who discovers that when you mix heaps of family, a tiny beach house, and sweltering heat, it´s a recipe for disaster. Speaking of recipes - the secret ingredients behind Gramma´s famous meatballs have been closely guarded for years. Can Greg unpack all of his family´s mysteries before their vacation is over? Or will he just stir the pot? This sidesplittingly relatable story is the funniest Wimpy Kid book yet!