as he awaits his resentencing hearing, wallace shares a cell with 20-year-old marcus swift. will soon transfer to prison to start a nine-year sentence for robbery. wallace has taken on the role of mentor. >> you know, like when you're young you want to fight every battle. he said this to me. he said that to me. every little slight, everything bothers you, irritates you. you know? but you can't -- if you do that you're never going to make it out. >> wallace and swift share something else in common. they are both members of the bloods. wallace says he is no longer active, but swift who was once shot in a gang dispute says he is fully committed and hopes to some day run into his shooter. >> i've been in it for so long it's just me. it's the -- i don't want to look at myself as in a gang. it's like an extended family to me. as far as me being shot, i will feel less of a man until i get my get-back. >> does that sound familiar? >> yep. yeah. it sounds like the exuberance of youth. >> coming up -- marcus swift leaves his mentor behind and gets a new cellmate. >> i knew him from ou