Ep 1. The Day That Everything Changed

Generator Rex is a science fiction animated television series created by Man of Action studios. The first season, consisting of 21 episodes, premiered on Cartoon Network on April 23, 2010. The show follows teenager Rex Salazar as he battles against the E.V.O.s (Exponentially Variegated Organisms) that threaten the world, but also grapples with the mystery of his own powers.

In the first episode of the series titled "The Day That Everything Changed," viewers are introduced to Rex Salazar, an amnesiac teenager with the unique ability to grow machines out of his body via nanites. Rex is initially unaware of his abilities and is living a normal life as a somewhat rebellious teenager in a dystopian landscape ruled by monstrous E.V.O.s.

The episode begins with Rex waking up in an abandoned city with no memories of his past and an apparent case of amnesia. He soon discovers that he has a strange new ability to build complex machines out of his very own flesh and blood, leading him to realize that he must navigate his way through a dangerous and unfamiliar world.

Rex meets up with the local Providence agents, a group of skilled and determined soldiers equipped with high-tech gear and specialized weaponry. The agents, led by the commanding officer Six, explain that Rex is a valuable weapon against the E.V.O.s, a form of bio-mutated creatures that threaten the safety of the world. The agents and Rex team up to track down a group of E.V.O.s that have been spotted terrorizing the city.

Rex finds himself in the middle of a firefight with the E.V.O.s and is forced to use his newfound powers to fend them off. In doing so, he not only saves the agents but also discovers that each of his nanites has its own intelligence and personality, which provides him with a unique sense of power and control.

During the course of the mission, Rex learns that there is more to his abilities than meets the eye. He discovers that his nanites were specifically engineered to fight against the E.V.O.s and that he was created to be the only one who could harness their power. Rex also begins to uncover glimpses of his past, leading him to realize that his amnesia may be more sinister than he originally believed.

The episode concludes with Rex demonstrating his incredible ability to form a powerful machine out of his own body. The machine, which takes the form of a giant arm capable of punching through solid concrete, is demonstrated to be a powerful weapon that can take down even the strongest and most ferocious of E.V.O.s.

In conclusion, "The Day That Everything Changed" is a thrilling and action-packed introduction to the world of Generator Rex. Viewers are introduced to a complex and engaging storyline, an intriguing cast of characters, and an unforgettable protagonist with a unique set of powers. The episode sets up the rest of the season brilliantly and leaves viewers eager to tune in to future episodes.