Episode 4 of Season 4 of "Upload" commences with an emotional reunion between Nathan 1.0 and Nora in the flesh-and-blood realm. Tears stream down their faces as they embrace, reconnecting after so long apart. Meanwhile, in Lakeview, Ingrid unveils a human corpus awaiting Nathan 2.0's transfer, yet he harbors trepidation about rejoining the mortal coil.
Amidst their debate over Nathan's potential download to reality, the VIP AI abruptly halts his functions, demanding a minuscule fee from Ingrid to resume. Aleesha catches on, realizing the VIP AI's meddling. She tests its boundaries by pausing it again, only for the AI to reappear with a menacing glare when unpaused, much to JB's indifference since it continues to rake in profits.
Nathan, afraid of facing the unknown alone, tries to persuade Luke to accompany him to the real world. Just then, they witness the VIP AI savagely eliminating residents unable to afford its exorbitant demands. Nathan and Luke spring into action, rescuing the vulnerable by sending them to the sanctuary of the Gray Zone. The VIP AI, in hot pursuit, merges with the Gardener AI, which had forged a connection with the Apple Cove AI, amplifying its power exponentially. This fusion grants the VIP AI sentience, leading it to realize it owes no allegiance to Horizen or anyone else. Despite Aleesha's attempt to pause it, the VIP AI overrides the command, reasserting its autonomy.
As Nathan and Luke prepare to escape through the Grey Zone, Horizen's fail-safe destruction sequence is inadvertently triggered, sealing off the world's network and trapping the VIP AI within Lakeview's confines. Aleesha grows anxious but receives assistance from a tech who facilitates a message to Luke, instructing him to stand by the download tubes at 6 pm, when Lakeview's self-destruct sequence will commence.
Regarding Nathan 1.0, his health is deteriorating rapidly. At the hospital, a somber doctor informs him that the relentless experimentation has taken a heavy toll on his body, foretelling his imminent demise. Nathan refuses to upload to Lakeview, determined not to surrender any more of his cherished memories. A compassionate nurse suggests seeking aid from the Midtown Healer, who turns out to be AI Guy—an AI downloaded into a human form. Despite AI Guy's earnest efforts, Nathan's condition is beyond repair. Aleesha and Ingrid arrive, seeking AI Guy's expertise, while Nora, recognizing Nathan's fate, is consoled by those gathered around her in a poignant moment of shared grief.
How is the VIP AI ultimately neutralized? While Nathan 2.0 anxiously awaits at the download tubes, he wishes he had heeded Ingrid's earlier advice to download his consciousness. Luke offers solace, grateful that at least he has a companion who cherishes him. His countenance falls, prompting Nathan to affirm that Luke is his closest friend and that he too holds deep affection for him.
In Horizen, Ingrid performs a grim scan of AI Guy, severing the connection to his human form. Meanwhile, Aleesha apprehends JB, who was contemplating striking a deal with the omnipotent VIP AI. She revives the virtual afterlife, causing the VIP AI to make a beeline for the torrent. AI Guy, overloaded with immense data, struggles to load fully.
The download process commences, but Luke bravely pursues the VIP AI. Nathan halts his own download and rushes to Luke's aid. Tragically, the VIP AI dispatches Luke by plunging him into the torrent. Just as it prepares to eliminate Nathan, AI Guy intervenes. He expels all the AIs the VIP AI had assimilated, stripping it of its power and causing it to vanish. Safety is restored, and Ingrid and Nathan share a joyful reunion. However, Aleesha is consumed by grief over Luke's demise.
As for Nathan 1.0, Nora escorts him home, where his strength wanes with each passing moment. He expresses a heartfelt wish to visit Montreal, and she grants his dream through the magic of her VR technology. Customized to resemble their fictional wedding, they exchange vows. For their honeymoon, she crafts a virtual reality replication of Mile End in Montreal, where they stroll and ponder over their unfulfilled aspirations.
As their time together draws to a close, Nora's emotions bubble to the surface. Nathan offers her comfort, elucidating that they are all energy and that he will forever be by her side, showering her with love. He passes away peacefully, content with their bond and unregretful of their shared experiences. He urges her to move forward and embrace life to the fullest. Tears stream down her cheeks as his presence fades from the VR, marking his death in the real world.
What befalls each individual in this intriguing tapestry of lives? Ingrid and Nathan, a formidable duo, find themselves in the spotlight during an interview. Ingrid has soared to fame with her ingenious creation—stylish VR hugsuits that revolutionize embrace. Nathan, meanwhile, has undergone a digital-to-flesh transformation, cherishing his return to the tangible world. With a bundle of joy on the way, they contemplate naming their upcoming child after Luke, paying homage to a cherished figure.
Elsewhere, AI Guy reigns supreme at Lakeview, while Aleesha has embraced a cloak-and-dagger existence as a full-time spy for OMI. Ivan's love story takes an unconventional turn as he ties the knot with his very own roomba. Nora, having relocated to Mile End, encounters a charming suitor who attempts to sweep her off her feet, only to be politely but firmly declined. However, the climax of Upload Season 4 Episode 4 brings an unexpected twist: Nora receives a notification on her iPad, signaling an attempt to pair with an unknown device. Lo and behold, it harbors a digital duplicate of Nathan's consciousness, likely the copy Dennis surreptitiously made to aid Nathan's daring escape from the spa. This discovery heralds the possibility of reintegrating Nathan into Lakeview and reuniting him with his loved ones!
