"The Mortal Cup" is the first episode of Season One of Freeform's Shadowhunters: The Mortal Instruments. It was written by Ed Decter and directed by McG. It is the first episode of the series overall, and premiered on January 12, 2016. This episode is the first season premiere.
One young woman realizes how dark the city can really be when she learns the truth about her past. Based on the bestselling young adult fantasy book series The Mortal Instruments by Cassandra Clare, "Shadowhunters" follows Clary Fray, who finds out on her birthday that she is not who she thinks she is but rather comes from a long line of Shadowhunters - human-angel hybrids who hunt down demons. Now thrown into the world of demon hunting after her mother is kidnapped, Clary must rely on the mysterious Jace and his fellow Shadowhunters Isabelle and Alex to navigate this new dark world. With her best friend, Simon, in tow, Clary must now live among faeries, warlocks, vampires and werewolves to find answers that could help her find her mother. Nothing is as it seems, including her close family friend Luke, who knows more than he is letting on, as well as the enigmatic warlock Magnus Bane, who could hold the key to unlocking Clary's past.
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