The adventures of average suburban boy Johnny Test, who wittingly plays test subject for his genius twin sisters' various experiments, reluctantly fighting evil villains in the process.The adventures of average suburban boy Johnny Test, who wittingly plays test subject for his genius twin sisters' various experiments, reluctantly fighting evil villains in the process.The adventures of average suburban boy Johnny Test, who wittingly plays test subject for his genius twin sisters' various experiments, reluctantly fighting evil villains in the process.