They start out in the Baitang Guopiao street office, waiting for people to show up. A tunnel from the Yong-Er shrine goes into the forest behind the Air Nomad Religion monastery. Then there is another tunnel under the wall, under the river to the Zang village (they figured putting it up against the wall would be too obvious.) The tunnel then goes to the Zang village where boats will be available shuttling people to the East Bank slums, pretending to lantern-fish for freshwater squid.
Complications
The Angjiao monastery is getting burnt down
Angjiao lost kid in the woods if they don't save the religious
Hongtang causing trouble in the Zang Village, looking for Baitang.
WANG Xue-e, a forty-three year old woman, who retired from a career as a civil earthbender for the city after her passion for actually doing her job, and lack of political tact, rubbed too many lazy bureaucrats the wrong way. She joined the Baitang as a second career, wanting to support an organization that was actually helping the citizens of Beigang. She is one of the city's strongest earthbenders, making up for her only middling prowess in combat earthbending with her impressive power. She often holds back when fighting in the city, though, out of fear of damaging her beloved civil infrastructure. She also manages the Baitang's infrastructure improvement plans. She is single, though she did raise her brother's son after her brother and his wife were killed in a house fire, and her nephew regards her as a mother. (He is now an adult and is studying at Ba Sing Se University.) Her family descend from an old settler clan who arrived in the Ting dynasty.
CHONG Yuyu, a twenty-five-year-old young woman, originally from the Fire Nation colony of Yu Dao, and although a member of the Central Earth Kingdom Zhongzu ethnic group, she and her family were practitioners of the Air Nomad Religion. Though having no Air Nomad heritage herself, her faith community nonetheless started to be persecuted when a new governor was installed in Yu Dao, and her mother, a lay teacher, was martyred for her faith. Her father decided to move rather than die or renounce their faith, and so they moved to the North, trying the escape the Fire Nation. Unfortunately, recent events have not transpired according to their expectations. Yuyu's family had been employed as mechanics operating Fire Nation machinery in Yu Dao, and brought their knowledge with them to Beigang when they moved here a few years ago. Yuyu is skilled with machines and mechanical things, and her father is employed at the Dragon Stove Company, which is protected by the Baitang. Yuyu joined the Baitang out of a duty to help keep the peace, and is particularly concerned with maintaining the ethnic harmony of the city. She has helped to build bridges between the Baitang and the indigenous Beituzhu community, and is seen as an up-and-comer in the organization despite her commitment to use violence only for immediate defense of people.
Fire nation raid in the Zang village -- also chasing the priest from the Yong-Er shrine up the tunnel (to make sure the tunnel is destroyed so the party can't escape that way in the main campaign)