Cassie loses her diary, which she believes may contain a picture of her that would reveal her identity as a Power Ranger. George, a teen troublemaker, gets ahold of it and uses it as blackmail to make Cassie go on a date with his pal, Lenny, a gentle giant. Meanwhile, Prof. Phenomenus unveils a new plutonium fuel, which plans to use to send Bulk & Skull into space to find aliens. But Astronema becomes aware of this, and has the Elephantitan monster try to topple the skyscraper the fuel is being stored at, in an effort to wipe out Angel Grove. It just so happens to be the same building Cassie & Lenny are having dinner at! Will she Morph in front of him in order to save lives? Or can a new weapon in the Rangers' arsenal arrive in the nick of time?