Grave Beginnings (Part 1)

The pilot episode of Forever Furious.

Plot
Master Zurui has been awakened from his imprisonment and immediately plots revenge. Sensei Katsuo realizes this and calls upon three teenagers to defeat the new enemy and dubs them "Forever Furious". Zurui sends an army of Ninjacks to defeat the rangers, but his plans fails and all the Ninjacks are destroyed in a firey explosion.