The Thunderbolts have returned to Earth after an interdimensional journey to Kosmos, but there's no rest for the weary as they are immediately pursued by S.H.I.E.L.D. - as well as a recovering Baron Zemo, who is out for their blood! Also, what happens when Atlas must contend with the mighty Hercules, who is out for revenge for injuries suffered in years past? Guest starring the Masters of Evil, the Avengers - and introducing the all-new Citizen V!