Ahlo is the father/daughter pairing of former Jedi Padadwan Ahsoka Tano and Jedi Master Plo Koon.
Plo and Ahsoka first met each other when she was three years old. Being the one who found her, Plo took her to the Jedi Temple, where she was to be raised to learn the ways of the Jedi. She and Plo had developed an unbreakable bond that was something of a father/daughter dynamic.
Through their bond, Plo Koon affectionately calls her "Little 'Soka" and Ahsoka calls him "Master Plo."
Moments in the Series
When she overhears that Plo was dispatched and never returned, Ahsoka worried excessively about him and the reason why she spoke out at the council meeting that involved her, Anakin, and the Jedi Council.
Ahsoka is the only one in the reinforcements who believes Plo is still alive. She later senses he is alive and comes to his an his unit's rescue.