During the Clone Wars era, a significant conflict erupted on the world of Phorose.
When the Separatist forces launched an invasion of Phorose, the Jedi dispatched Jedi Master Plo Koon alongside Padawans Ahsoka Tano and Barriss Offee with the mission of spearheading the planet's defense.
As the conflict raged, the Padawans found themselves caught in an ambush orchestrated by droid tri-fighters, which resulted in them plummeting into a subterranean temple, leading to the chance discovery of a Ru community. However, a contingent of battle droids sprung an ambush on the two Jedi, leading to the destruction of the Ru temple. Following the temple's collapse, Tano and Offee made the decision to evacuate the remaining Ru to a secure location, away from the ongoing fighting. Regrettably, the LAAT/i gunship transporting the two Padawans and the Ru came under attack by Vulture droids, which resulted in the demise of the Ru, with only two Ru and the two Jedi surviving the ordeal.
The confrontation reached its conclusion with the Galactic Republic claiming victory, although it came at a heavy price, as much of the Phorosian capital city was left in ruins and the vast majority of the Ru perished.
After being witness to the deaths of these innocent beings, Offee began to question the principles and motivations of the Jedi, as she believed that the Republic and the Jedi Order bore responsibility for their tragic fate. Eventually, she came to the belief that the Jedi Order had transformed into a tool of the dark side by becoming generals in a war waged to protect a morally bankrupt Galactic Senate. This pushed Offee to assist in a terrorist act against the Jedi Order and subsequently place the blame on Tano, her closest confidante.