While performing routine night maintenance inside Big Ben in 2050, a young mechanic discovers a gravity-defying metallic sphere hidden within the gears. His investigation triggers the awakening of a mysterious holographic entity that claims to be the clock itself.

Inside a futuristic Big Ben, Mike finds himself in grave danger when a mysterious figure named Alfie overrides the tower's colossal machinery. As gravity warps and the clock's core splits open, Mike fights for survival against a catastrophic anomaly.

Mike and Alfie are unexpectedly thrust back in time to the year 60 AD, arriving directly in the path of Queen Boudica's historic Iceni revolt against Roman forces. As the settlement burns around them, the duo must navigate the violent crossfire while contending with strange temporal anomalies.

When a collapsing temporal rift forces Mike out of Roman-era Britain, Alfie is unable to stop the sequence and plunges them forward through time. Stranded with broken gear, Mike must adapt as he lands squarely in the deadly streets of London during the Great Plague of 1665.

After escaping plague-ridden London, Mike and his spectral guide, Alfie, leap forward in time to Pudding Lane in 1666. Caught in the sudden ignition of the Great Fire of London, Mike struggles to accept his companion's insistence that they can only bear witness to history as the city burns around them.

Stranded in the Great Fire of London, Mike attempts to intervene and save the burning city from destruction. However, his mentor Alfie stops him, forcing him to understand why historical tragedies must sometimes be allowed to unfold.

After materializing high above Victorian London in 1859, Mike marvels at the ongoing construction of Big Ben alongside Alfie. However, he quickly realizes that the unfinished mechanism leaves him without a way to power his suit to return home. As Mike takes in the monumental machinery around him, an unexpected and dangerous reaction threatens their precarious foothold.

Arriving in 1940 London during the Blitz, Mike finds shelter in a subway station alongside resilient citizens who sing through the aerial bombardment. Seeking to understand the city's enduring spirit amid the chaos, he heads to the surface to witness the steadfast resilience embodied by the surviving clock tower.

Amidst an air raid in 1940s London, Mike discovers that his specialized jacket can harness the city's data resonance to power a trip back home. Guided by his holographic companion Alfie, he steps out into the dangerous streets to sync directly with Elizabeth Tower and initiate the jump.

Stranded atop a crumbling Big Ben during a wartime bombing raid, Mike must find a way to complete an interrupted jump. With Alfie's guidance, he taps into the enduring power of the iconic clock tower to fuel an escape into the night sky.

Emerging from a portal into the skies of modern London, Mike marvels at the intact skyline he helped preserve. Accompanied by Alfie, he takes in the thriving city below before preparing for the final leap back to his own time.

Returning to the clock tower after a grueling temporal trial, Mike confronts the enigmatic Alfie about the true purpose behind his perilous journey. Having proven his ability to safeguard history, Mike must decide whether to accept the immense responsibility of maintaining time itself.