Just when a group of fifth-grade friends is returning to normal life and to school after a global pandemic, the waters of the Chesapeake Bay have become polluted by a plastic-eating bacteria experiment gone wrong-and both fish and kids are getting sick!

Izi, Gir, and their friends go to science club and discover a fishy cover-up. The school has to close down again! These climate warriors who call themselves the Antidotes join forces with public health activists to find clean water solutions. The friends use STEM strategies to help save the earth from a potential disaster-they also have secret meetings, do a little spy work, and make some useful discoveries.

The Antidotes race against the clock to get out the word to kids around the world about how to stay safe. But-will the Antidotes be able to get enough kids to achieve zero plastic use before it makes any more fish or children sick? Join the Antidotes in their first science adventure, and stay tuned for more stories to come!