Always with the quick primer:
Ares, Zeus’ son the God of War, joined the Avengers at Tony Stark’s request when Steve Rodgers and he re-formed the Avengers after the disassembled mess. Then, after Civil Wars and Secret Invasion, Ares stayed on the team when Norman Osbourne took over ’cause like what else was he going to to do, right?
On the flip side, Nick Fury, ex-head of S.H.I.E.L.D. secretly recruited Ares’ son Alex aka Phobos, the God of Fear, into his Secret Warriors formed to counter-action Osbourne. Fury and his team have been acting as a covert group in their own book, moving from safe-house to safe-house using counter agent tactics to subvert Norman Osbourne. As this issue opens, Ares has thinks Fury has kidnapped Alex and goes to get him back. Got it?
Follow here to read the rest of Off the Rack: Dark Avengers #9