Ever since the Star Trek: Deep Space Nine (DS9) series finale, “What You Leave Behind”, aired in 1999, many DS9 fans wondered what became of Starfleet Captain Benjamin Sisko. In the closing moments of the final episode, Sisko sacrificed himself to prevent his arch-nemesis, Gul Dukat, and the evil Pah-Wraiths from trying to take over the galaxy. But there was more to his final noble act.

Even though Sisko was seemingly incinerated in the Fire Caves of Bajor, he was actually transported into the interdimensional realm within the Bajoran wormhole by the non-corporeal beings that reside there. He was told by his mother (who was actually one of these beings) that he would exist in the timeless realm and become one with the beings who were called Prophets by the Bajorans, who also worshipped them. During the run of DS9, Sisko was seen by the Bajorans as an important religious figure and referred to as the Emissary of the Prophets because of his prophesized connection to the Prophets. We next see Sisko appearing in a vision to his wife Kasidy and he promised to return one day. That was the last time we saw Benjamin Sisko, although in the non-canon comic books, novels and such, he did appear after the events of “What You Leave Behind.”

The mysterious fate of Benjamin Sisko, or The Sisko, as the prophets call him, was the main plot of the fifth episode of Star Trek: Starfleet Academy, which just streamed. The episode “Series Acclimation Mil” focuses on SAM, a holographic or photonic being who is a Starfleet cadet, but is also an emissary to her people. She is struggling to explain corporeal beings to her people, who are all photonics, and she decides to study Sisko since he also was an emissary. Before long, SAM becomes obsessed with trying to solve the mystery of Sisko’s fate.

Spoiler alert: SAM never learns what became of Benjamin Sisko, although she gains new insight into the Star Trek legend, both as a man and as a religious figure. That alone was worth the effort for SAM because her study helped her understand humanity a bit better while the audiences got some intriguing insights to the world of Star Trek: Deep Space Nine after the finale. “Series Acclimation Mil” is littered with many fascinating Easter eggs related to DS9 and Benjamin Sisko and how the show and its main character are remembered far into the 32^nd century.

Probably the best part of this episode of Star Trek: Starfleet Academy was when the actor Cirroc Lofton reprised his role of Jake Sisko, Benjamin’s son, but now as a fully grown adult. He appeared first in a hologram where he is interviewed about his father. But more poignantly, he appeared later as an interactive hologram to SAM and we learn that Sisko never returned, although he is still in Jake’s heart as it should be.

Another nugget thrown our way was the revelation that the instructor that helped SAM in her study was a new incarnation of Dax, Illa Dax. She still fondly rembered her old friend Ben, and was played by Tawny Newsome under tons of alien makeup. Then there was the virtual visit to the Sisko Museum in New Orleans, which is littered with many items from the TV show.

The way the episode ended was very touching. As SAM looks off into the sunset and thanks Sisko, we hear a line of poetry from Avery Brooks, who played him. The screen faded to black and the words “Thank you, Avery” appear along with the majestic theme song from Star Trek: Deep Space Nine to accompany the closing credits. It was a a heartfelt tribute that should delight DS9 fans.

It’s a shame that it has taken decades for Star Trek to getting around to revisiting the world of Star Trek: Deep Space Nine, considering that it is regarded by many to be the best Star Trek TV show. Unfortunately given that many actors from the show are no longer with us and Avery Brooks has retired from acting, we may never see a DS9 reunion. However, the powers-that-be could always figure out how to bring back the remaining actors for a special or a limited series. If Paramount could greenlight garbage like Star Trek: Section 31, they can give us a story about DS9. For example, even though recorded history stated that Benjamin Sisko never returned, there could be a story where he did return after Jake made the hologram. Or maybe after Sisko returned, his loved ones like Jake and Dax swore to never reveal this fact. We may never know for certain. This enigma about The Sisko’s fate was one of the best aspects of “Series Acclimation Mil” since it was left as an unsolved mystery and a fitting tribute to both Sisko and Star Trek: Deep Space Nine.