Episode 5 of "Debris" kicks off with a harrowing bus journey taking an eerie turn. As the bus inexplicably teleports and crash-lands in a desolate parking lot, the soundscape abruptly plunges into a suffocating silence. Amidst the wreckage, a solitary figure emerges, crawling out from the rear of the overturned vehicle, only to find himself confronted by an enigmatic bald man towering above him.
Elsewhere, tensions are running high aboard a plane where Finola and Bryan find themselves entangled in yet another mystifying case file – this time, the fragmented remains of the very same bus. After exchanging poignant reflections on their previous endeavor, they touch down in Boston, where they confront the carnage firsthand, their senses heightened by the grim spectacle.
Thanks to Frank's diligence, CCTV footage reveals the bus hurtling down Beatty Street before vanishing into thin air. Eyewitness accounts corroborate this bizarre occurrence, recounting a piercing high-pitched whine that echoed through the air at the precise moment. Curiously, the bald man, who happens to be exiting a nearby bank, stands by as a detached observer, unperturbed by the spectacular disappearance.
With a potential perpetrator in sight, Finola tracks down the bus crash survivor, who lies bloodied and motionless on a table, a bullet wound to the head and a peculiar absence of hair samples hinting at foul play. The telltale signs suggest that Influx, the shadowy organization, may be at it again with their grotesque experiments. As Bryan prepares to confront Maddox with this latest revelation, forensic results from a coffee cup discarded outside the bank arrive, casting light on the mystery.
The bald man in question is revealed to be Peter Joseph Eickmann, an ex-paramilitary operative who entered the country under the guise of an EU passport and finds himself featured prominently on several high-profile watchlists. This damning information sends Finola and Bryan on a race against time to track down Peter, their enigmatic lead in unraveling this increasingly complex web of debris.
Suddenly, their progress is halted by another piercing whine, sending shivers down their spines. The authorities soon arrive on the scene, confirming that this wormhole towers above all others in size; it stretches for several city blocks, a monumental anomaly. Finola and Bryan's search leads them to Peter, who somberly informs them of their futility in halting this catastrophe. In a harrowing act of desperation, Peter takes his own life, vowing that another would rise to take his place.
Shortly thereafter, Finola's journey is interrupted by a van driver who claims Ferris has withheld crucial information from her. He presses a USB stick into her hand, revealing a startling revelation: her father is not a clone. Together with Bryan, Finola scrutinizes the footage, their eyes widening as they spy two excavators facing each other in the distance. This visual clue appears to be the linchpin; Finola deduces that these wormholes are being birthed through two metallic structures serving as conduits. Alarmingly, it seems Influx intends to rip open a colossal wormhole right in the heart of Manhattan.
Determined to thwart the terrorists, Finola and Bryan track down Influx, engaging in a harrowing chase to prevent catastrophe. Tragedy nearly strikes Bryan's team as Mallory is struck in the abdomen by a bullet. Thankfully, Bryan's swift reflexes save both her and him from a grim fate, dragging her out of the hallway just as debris looms ominously on the wall.
In parallel, Finola gives chase to a bearded man who confronts her on the street. His lips curl into a smile as he whispers, "You have his eyes," just as the sound mysteriously cuts out, signaling the impending wormhole's opening. Fortunately, this is but a fleeting glitch, as Bryan manages to synchronize the machine and disrupt the signal, securing Manhattan's safety—at least for now.
As dusk settles, Bryan and Finola reflect on the day's harrowing events. However, Finola harbors doubts about Langley and deceives him, feigning ignorance of the bearded man's words before his arrest. With the case seemingly resolved, Finola finds solace in watching an old home video featuring her and her sister, a poignant reminder of better days.