Ambush at the Distant Star Facility

While Jemma Simmons and Leo Fitz were trying to get Will Daniels back from Maveth, they went to the facility in hopes of finding info. Instead, Luther Banks and the other agents died while Fitz and Simmons were kidnapped with HYDRA torturing the latter.

Background
To be added...

Ambush
As Fitz, Simmons and Banks reached the Facility Giyara forced Agent Banks to shot the S.H.I.E.L.D. backup and himself. He explained that Gideon Malick needed to see Fitz and Simmons. Kidnapping the duo for HYDRA.

Torture
After their capture by HYDRA, Fitz and Simmons were placed in two different rooms. With Fitz was Grant Ward who told him he must lead the HYDRA team into Maveth, or else he they would torture Simmons.

Aftermath
Fitz finally gave into helping HYDRA after hearing Simmons scream from being tortured. He went through the portal to Maveth to help HYDRA bring the dark Inhuman back to Earth but secretly he was hoping to bring Will Daniels. When S.H.I.E.L.D. learned that Fitz and Simmons had been kidnapped, they went to the HYDRA Castle which led to the Attack on the HYDRA Castle.