A new threat lurks deep within the Netherworld, and the future of mankind rests in the hands of the only team with the knowledge and powers to defeat it - the Power Rangers Samurai! Jayden, Kevin, Mia, Mike, Emily and Antonio must battle Master Xandred's menacing Nighloks as they also learn to hone their powers and energies from Mentor Ji. Whether it's saving civilians from physically crippling insults or mastering new Megazords and Beetle Cannons, the Rangers must do whatever it takes to bring down the Nighloks. But soon a mysterious new enemy appears on the horizon, intent on battling Jayden. Who will prevail?