The Legend of William Tell - Plot Synopsis - Episode Four: Darkness and Light

Rather than execute Leon immediately, as Xax would prefer, Kreel holds Leon prisoner - as bait, convinced that William will mount a rescue attempt.
Will witnesses Leon’s arrest and seizes a Xaxian Warrior’s deathwand which he takes back to the Shelter with him. Will believes he can tune the

Will has a plan of his own and lures Xax from the Citadel by proposing a duel with deathwands in the forest. With Xax out of the way and with the help of Alexim, Will instead slips into the Citadel to rescue Leon...

Kalem, speaking through Vara, calls Will back to the Light - and he, the princess and Leon escape through the Citadel just as Xax returns to confront Kreel for his failure to destroy Tell and the resistance movement.
Will has learned a hard lesson and lives to fight another day.