Half-Life: The Series

Half-Life: The Series is a television series based on the video game series by Valve.

Part 1
Following the destruction of City 17, Gordon Freeman and Alyx Vance find themselves in another Combine run city. They are captured and taken to a swimming pool, which is filled with Ichthysaurs and they (along with other captured Resistance) must walk across a narrow catwalk across the pool to reach the other end, without being caught and eaten by the creatures.

A couple of citizens go first, but end up falling into the pool. Gordon and Alyx decide to go for it and make their way across the narrow walk, with Combine jeering them. However Alyx loses her footing and ends up pluging into the water, and despite Gordon's best efforts, a Ichthysaur grabs Alyx's and pulls her under the water and to her death.

Gordon manages to make it to the other side of the pool but ends up being chased down by Combine troops. Equipping himself with a gun he shoots his way out of the facility and uses a vehicle to make his escape. Having lost the Combine, he grieves for Alyx but decides to continue on for the fight for humanity.

Part 2
Gordon finds himself breaking into a Combine factory located in the Coast. While trying to destroy their machines which are building Synth hybrids, Gordon ends up being caught in a machine where thousands of pins are shot into his body. The metallic pins end up under his skin, creating a protective sheet which makes Gordon safe from gunshot wounds. Reaching a bathroom and in pain, Gordon sees his appearance has changed radically, he is thinner in appearance and has a gaunt face and finds he resembles The G-Man.

Part 3
Gordon is driving through a forest until all of a sudden a rocket hits his car. He is thrown from the wreckage and is knocked out. He falls into a coma and dreams about his teenage years, in which his girlfriend Lindsay was found dead in a car smash up. In his hallucination he deduces that his evil twin brother Evil Freeman was responsible for the wreckage. It turns out Evil kidnapped Lindsay and bundled her into the trunk of a car, but during transport a car smashed into the back of him. Evil Freeman set it up to look like an accident, and the grief caused Freeman to go mute and take up a career as a scientist. Freeman wakes up from his coma with his voice back, and finds out Evil Freeman landed him in the coma over jealousy for Freeman's fame. Freeman coldly bundles his brother into the trunk of a car and crushes it at the Black Mesa East Junkyard, and allows Dog to play fetch with the crushed cube.

Part 4
In a continuation to Half-Life: Alyx, Freeman and Eli team up to rescue Alyx Vance from the G-Man. Meanwhile, Dr Colette Green from Half-Life: Decay leads the Combine in a quest to capture the G-Man.

Part 5
Detective Freeman and Barney Calhoun investigate a series of grisly murders in City 18.

Part 6
After Freeman goes missing Eli and Alyx go after the G-Man, with shocking results.

Trivia

 * The ending of the second installment which shows that Gordon Freeman has become The G-Man is a reference to a common fan theory that G-Man is Gordon Freeman from the future.