The S.H.I.E.L.D. agents had been welcomed into the remnants of the Zephyr One by the True Believers, a group who used to oppose the Kree rule over the Humans. However, the True Believers eventually turned on S.H.I.E.L.D. by attempting to murder Quake, who they deemed responsible of the destruction of Earth. This caused the death of Robin Hinton who, in her dying breath, told May that the key to S.H.I.E.L.D. returning to their time was a Lighthouse Inhuman named Flint. Therefore, S.H.I.E.L.D. worked on repairing the Zephyr One to return to the Lighthouse, unaware of the presence of Sinara among them as she had infiltrated the plane shortly before it took off.
DuelSinara remained hidden in the Zephyr One while the S.H.I.E.L.D. team struggled to take it off, until she saw Daisy Johnson leaving the group to help disconnect the anchors grounding the plane on the surface of the Earth. Sinara thus attacked Johnson, leading to a fierce fight which was initially rendered quite uncertain due to the absence of gravity when the aircraft was forcibly taken into the air. The artificial gravity was then activated by Melinda May, enabling the two women to fight on a more steady floor.
Fighting on a bridge in the plane's cargo bay, Johnson attacked Sinara with a heavy canister, but was promptly disarmed by the Kree warrior. Johnson then attempted to incapacitate Sinara with electric cables, but Sinara once again broke free and kept countering Johnson, eventually causing the two women to break the guardrail and fall from the bridge. Johnson and Sinara kept fighting, being quite on par with each other for a while, until Sinara was eventually able to gain the upper hand and repeatedly punched and kicked Johnson to knock her out.
Overpowered by Sinara, Johnson attempted to return on the bridge, but Sinara caught her leg to force her down. Johnson thus kicked Sinara to get rid of her, annoying the Kree warrior, who drew her knife and decided that she would kill Johnson even though Kasius preferred to have her alive. However, as Sinara prepared to strike, she was stopped by Deke Shaw, who had followed Johnson and blocked Sinara's arm with a Grappling Claw. Sinara detached the claw from her arm and quickly knocked out Shaw, being mostly unaffected when he attacked her.
Sinara then set her attention on Johnson once again, as she had managed to get on the bridge. The activation of the plane's thrusters enabled Sinara to jump from the floor right to the bridge, and she prepared to stab Johnson, but Johnson was able to anticipate the move and impaled Sinara on the broken piece of guardrail, thus killing the formidable Kree warrior.
With the threat of Sinara removed, the S.H.I.E.L.D. team was able to safely take the Zephyr One to the Lighthouse. Having left the plane shortly before they arrived with a Containment Module, they allowed Kasius and the Kree Watch to inspect the aircrat, and the Kree immediately found Sinara's body. The death of his lover and best warrior had a devastating impact on Kasius, who began to lose his sanity as his rule over the Lighthouse was constantly challenged since S.H.I.E.L.D. had arrived from the past. Kasius ordered his doctor to revive Sinara just like he had with Tess, but the doctor explained he was unable to do so, causing Kasius to kill him. Sinara's death would eventually partly lead Kasius into drinking the lethal Odium.
- ↑ Agents of S.H.I.E.L.D.: 5.02: Orientation Part Two
- ↑ Agents of S.H.I.E.L.D.: 5.03: A Life Spent
- ↑ Agents of S.H.I.E.L.D.: 5.04: A Life Earned
- ↑ Agents of S.H.I.E.L.D.: 5.06: Fun & Games
- ↑ Agents of S.H.I.E.L.D.: 5.07: Together or Not at All
- ↑ Agents of S.H.I.E.L.D.: 5.08: The Last Day
- ↑ 7.0 7.1 Agents of S.H.I.E.L.D.: 5.09: Best Laid Plans
- ↑ Agents of S.H.I.E.L.D.: 5.10: Past Life