Even with Sebastian now safely behind bars, the Lab Rats still have some unfinished business on Davenport's hi-tech island. Chase and Douglas discover that Krane implanted all bionic students with a deadly virus and they must move quickly to avert disaster. Leo begins to feel more and more overshadowed by Chase, Bree, and Adam's bionic prowess. And, with a new space initiative on the horizon, Davenport continues to push the envelope. But, on Bionic Island, technology can be both friend…and enemy.