M/M and a bit of F/M.
Okay, I lost this fic sometime ago and I am desperate to read it again.
Stiles is a BAMF (badass) how has a cattle prod or something like that. He rejects Lydia a little in the beginning, when she tries to convince him (think: flashes him a bit, tries to get him all hot and bothered) to do something. Stiles realizes he is actually very toned because of the running with the wolves. Then in the school locker room he sees Jackson staring at him. Later, Stiles being back at his house, the pack comes because something happens with the alpha pack. He tricks them into thinking he is going out do another thing, the downside being someone of the pack has to go with him, when he is really going to go alone against the alpha pack. Jackson goes and Stiles is driving. Some slash happens and Jackson ends handcuffed to the cars steering wheel. Stiles gets to the Alpha Pack and wreaks havoc, killing one of them with his cattle prod and mountain ash.
Yada, yada…. He goes back home…. The pack though he was kidnapped. Yada, yada…. What’s left of Alpha Pack comes and tries to take Stiles as a member since he killed one of their own… Stiles refuses and ends up flirting a bit with (I think) Kali.