A Beginning of an Ending

During World War II Bucky had to leave not only Steve Rogers but the love of his life Riya who was headstrong and mean when she had to be but kind and caring when dealing with people she loved until...Hydra came and stole her life away and put her into cryo away from her fiance and Steve...

Years go by (Takes place when Tony survived Endgame) when assassins single-handedly take out S.H.I.E.L.D.S bases