Arc 1The First Summoning
Shen He summoned Saiki Kusuo into the Marvel Universe and used the system to explore a dungeon, while their arrival drew the attention of S.H.I.E.L.D., Tony Stark, and Hydra. The arc ended with Shen He settling into Tony's mansion as Fury and Coulson investigated a Hydra-linked conspiracy.
- Shen He discovered he had transmigrated into the Marvel Universe and summoned Saiki Kusuo, who accepted after Shen He offered him coffee jelly.
- Shen He explained the system and its coming threat to Saiki, then met Coulson and arranged legal identities while introducing himself as a Master from Chaldea.
- Shen He and Saiki entered a dungeon, where Shen He gained levels and learned that Servants needed enhancement stones and mana to grow stronger.
- Saiki saved a heart patient by reversing time, then warned Tony Stark that Tony had only a few months to live.
- Hydra-linked gunmen attacked Shen He and Saiki, and Shen He summoned the Mirage mech to protect civilians while Tony fought the gangsters.
- Shen He told Fury that Hydra had survived Captain America's defeat, then traded Tony access to the mech for rooms at the mansion.
- Saiki returned to his world after promising to come back if Shen He faced danger, while Shen He asked JARVIS to identify which Marvel Universe he had entered.
- Coulson traced the gang's weapons to the police commissioner, and Fury ordered him to keep secret that a captured Hydra agent had once been a Level Five S.H.I.E.L.D. operative.