The Timekeeper's Promise

Once upon a time, in the smoky hills of Northumberland, England, set a quaint little village isolated from time's progress. The only significant structure was an antique clock tower that stood in the heart of the village. It was well known that this was not a tower of ordinary kind, but one that was alive, one that breathed, one named Tock.
Tobias, a highly esteemed clockmaker, was Tock's guardian. He was not just a serviceman but a confidant, a friend who listened and understood Tock better than anyone else. Tobias was a man of routine. His days were consumed by attending to Tock's grievances, from oiling the rusty gears to handling the unpredictable swings. The villagers often poked fun at Tobias, calling him 'The Timekeeper'. But he didn't mind. He felt a unique connection with Tock, almost like they were tethered to one another.
One day, Tobias noticed a strange anomaly. The hands of the clock were moving backward. The seconds, minutes, and hours started to reverse. Villagers noticed anomalies of their own. Time seemed to be unraveling its own threads. Yesterday's baked bread returned to dough, ashes resurrected into blazing logs, and wilting flowers regained their velvety bloom. Chaos ensued.
Meanwhile, Tobias stood at the heart of it, deep in contemplation. He knew that time itself was entwined with Tock's eccentricity. Desperate to normalize the town, Tobias tried to manually readjust the hands on the clock face. A blinding light emanated from Tock, and Tobias was instantaneously swept off his feet, propelled into oblivion.
It seemed like only seconds had passed before he opened his eyes to a familiar yet startling sight. Very quickly, he realized he was standing in the middle of his own past. Everything appeared as it was twenty years ago; children who had grown into adults were kids again, including his own son, Thomas.
Tobias' heart ached as he looked at Thomas, full of life and joy, unaware of the cruel illness that awaited him in a few years' time. Tobias realized that he had the power to alter the course of his tragedy. However, he also knew that modifying the past could disrupt the equilibrium of time with unforeseen consequences.
Backed by the love for his son and the dread of a doomed future, Tobias finally decided. He took Thomas to a different path, one which would steer him clear from his impending sickness. As he did, he felt a sudden pull from Tock again, drawing him back to the present.
Tobias found himself back in the tower, the hands of the clock stationery. Time had resumed its natural course. The village was back to normal, oblivious to the catastrophe they'd just escaped. Although anxious of the consequences, Tobias ran home, hoping his son would be there.
A tall man, fit and fine, opened the door. It was Thomas, alive and well. Overwhelmed with joy, Tobias hugged his son, tears streaming down his face. He had done it; he had saved Thomas. But Thomas seemed perplexed - for him, it was like the tragedy had never happened. For Tobias, his happiness was marred by grief that his son was a stranger to his sacrifice. He decided to keep his adventure a secret. That night, his heart held a promise; a promise of love, sacrifice, and infinite miracles.
The saga of 'The Timekeeper's Promise' remained an unsung song between Tobias and Tock, an ancient secret suspended in the narrow cusps of time.