Avatar: Gaiden

Long ago before Jake Sully went to Pandora he was actually married and had a child a boy named YN things were good for them but that was until Jake wife died from a illness when she died Jake only had his brother and his son but things went bad again when his brother was killed now he only had his son left Jake starts focusing on raising his son but then he got a offer to come to Pandora he wanted to bring YN but he couldn't because it would take 5 years to reach Pandora and babies can be put in cryo sleep so Jake had to leave his son behind before Jake leaves to Pandora he met a woman and he learn she was his wife's sister so he let her take YN and let her take care of him until he comes home and he leaves to Pandora now YN being in the arms of his aunt now this is where Jake never learn from his wife that she was a member of a clan of ninjas call the Raven clan and now during the years of growing up YN Aunt was training him and now a part of the Raven clan now at 18 years old YN was giving a mission to be sent to Pandora and go kill a powerful being call the Dark Dragon