Eleven finds her sister Kali, but everyone close to Kali seems to think Eleven is up to something. 

She joins forces with them when she learns that they go after Hawkins Lab associates. 

Kali helps Eleven improve her abilities by channeling her anger into power and she managed to move a whole train. 

Eleven accompanies them as they go to attack Ray, but Eleven realizes she has been silly when there are two children in the house and she does not want him murdered while they are in the house. 

Eleven pushes back when Kali tries to push her to kill the man. Eleven then takes Kali's gun when she tries to do the same thing. Kali insists that Eleven join their cause or leave. 

Eleven has a vision of Mike and Hopper at the lab and sets back to Hawkins to help them as Kali and her people flee the police.