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!.