The day long trip to the island is intense. Sokka is beyond angry when she realizing that the scarred guy is still on their tales, and doesn't really care when Aang informs her that the fire bender's name is Zuko. She mores care that Zuko and tons of other fire benders are firing at them. After nearly falling to her death, the whole group manages to get away and get to the island. Thanks to a little resting on Appa, Sokka is ready for whatever is thrown their way. She's not going to overanalyze her fighting, she's just going to take on whatever comes their way.
Whatever comes their way is a little anti-climatic at first. Until the Fire Sages show up. And even then, more running is involved than actual fighting. But Sokka is happy when she's able to help by using an old trick of her father's to imitate fire bending. It doesn't work to get the door open, but it does work for tricking the Sages into opening the door. She also helps blind one of the Fire Sages. Unfortunately Zuko shows up to ruin their plan by capturing Aang. Katara and her get chained together, but it gives them a great spot to watch Aang escape from the fire benders and get into the room to talk to Avatar Roku.
When another irritating fire bender names Zhao shows up, Sokka is pretty sure they're doomed. The older man makes a good point about how Aang will have to come out eventually. The fire benders eventually circle the door's perimeter and wait for the door to open.
"When those doors open," Zhao shouts, "unleash all your firepower!"
"How is Aang going to make it out of this?" Katara asks worried.
"How are we going to make it out of this?" Sokka says as her reply.
The answer ends up being Avartar Roku burning everything. Soon Sokka is kneeling over Katara trying to shield her from anything, knowing that her body is barely a shield against fire. Soon enough Avatar Roku disappears and leaves behind a weary Aang.
Sokka and her sister help lift Aang up and lift him to his feet. "We got your back." Sokka says, hoping she sounds supportive. Aang wants to know where the sage is who helped them, but neither of the water tribe siblings know where they are. The trio is able to escape on Appa.
As night time falls, the trio huddle around each other on Appa. Aang is clearly distressed about something, but Sokka lets exhaustion take her away to pleasant unconsciousness.