Walter OBrien and his team of brilliant misfits continue to solve the complex, high-tech threats of the modern age. The new Director of Homeland Security reunites the team when a nuclear powered Russian satellite is knocked out of orbit and must be diverted before it detonates over Southern California, Paige and Walter must come to terms with their complicated feelings towards each other, Tobys relationship with Happy takes a new turn with some help from Cabe and Sylvester is determined to be the man that Megan needs.