The Substitute Spy (2016) online

In the small sub-division of Timber Rock, The Timber Rock kids start their 1st adventure when they discover an international Spy syndicate at their school. A group of kids obsessed with playing video games mistakenly uncovers a plot by someone in their school to control the world. At their school they start to notice weird things from students and faculty alike. While trying to uncover the cause of suspicious activity, they find out that their substitute science teacher is a secret agent sent to bring the bad guys to justice. The motley crew of kids believe their principal is the leader of this international but they soon discover that someone they would have never expected is actually the mastermind intent on world domination