Idealistic inventor Jayce attempts to harness magic through science despite his mentor's warnings; criminal kingpin Silco tests a powerful substance.

An epic showdown between old rivals results in a fateful moment for Zaun; Jayce and Viktor risk it all for their research.

With Piltover prospering from their tech, Jayce and Viktor weigh their next move; a familiar face reemerges from Zaun to wreak havoc.

Rogue enforcer Caitlyn tours the undercity to track down Silco; Jayce puts a target on his back trying to root out Piltover corruption.

An eager protégé undermines his mentor on the council as a magical technology rapidly evolves; with authorities in pursuit, Jinx must face her past.