After outwitting his Jedi foes and escaping with the Holocron, bounty hunter Cad Bane sets into motion the next stage of his nefarious assignment: to find Force-sensitive younglings and take them to Mustafar for Sith training.
But Bane is merely the instrument of evil, a deadly distraction to occupy the Jedi while the true source continues to plot from the shadows. While he has been glimpsed in previous episodes -- and in his seemingly benevolent double-role as Supreme Chancellor of the Republic -- Darth Sidious emerges in 'Children of the Force' as a direct threat to the galaxy's future.

Source: Starwars.com