The "HD" in your title likely refers to a high-definition upload of the episode, which emphasizes the high-budget period costumes and special effects used to recreate the Ottoman Empire. The Protector (TV Series 2018–2020)
of his true heritage or a critical confrontation with a past version of a known enemy. Zastitnik HD - S04E0146:43 Min
While in the past, he encounters ancestors of the Loyal Ones and faces a version of Istanbul that is both familiar and dangerously different. The "HD" in your title likely refers to
If Hakan fails to change history in this episode, the modern-day Istanbul he left behind will remain under the control of the Immortals. Scene Context at 46:43 Zastitnik HD - S04E0146:43 Min
Hakan must navigate the ancient streets of Istanbul to find the source of the Immortals' power.