When Red Skull is dying due to his imperfect Super Soldier Serum, he teams up with MODOK who upgrades HYDRA's tech from A.I.M. to kidnap Captain America.
He teams up with MODOK. This MODOK upgrades HYDRA's tech from A.I.M.. This was to kidnap Captain America. Red Skull is dying due to his imperfect Super Soldier Serum.