Steve Rogers discovers that the great-granddaughter of the Red Skull has been slowly reforming HYDRA in the modern day. When Steve tries to take her down, he encounters The Serpent Society who are working with HYDRA. Steve seeks the help of S.H.I.E.L.D and he gets the help of Sam Wilson, Dennis Dunphy, Hawkeye and Sharon Carter, the grandniece of Peggy. While facing The Serpent Society, one of the members named Diamondback turns her back on the group and sides with Captain America and his team to bring the fight to Sin, The Serpent Society and HYDRA.
