Young Dor places a stick in the ground and charts its moving shadow to create the first sundial.

A supernatural old man appears to Dor, transforms his sundial into a swarm of wasps, and vanishes into darkness.

Dor marries Alli and they have three children while their childhood friend Nim becomes a wealthy and powerful king.

Nim visits Dor, demands his timekeeping knowledge to strengthen the tower, and banishes Dor when he refuses.

Alli contracts the same plague that marked the elderly couple who visited their exile camp.

Dor runs to Nim's tower and begins climbing it, hoping to reach the gods and stop time to save Alli.

The tower collapses and Dor lands in a dark cave, where the old man declares he will not age.

The old man gathers Dor's tears to form a pool through which Dor will hear humanity's endless cries about time.

The old man returns to Dor's cave and creates a magical hourglass, charging Dor with teaching two people the meaning of time.

Victor visits a clock shop and meets the apprentice Dor, who selects an antique French pocket watch on his behalf.

Sarah visits the same clock shop looking for a gift and the apprentice asks her why she is so sad.

Dor stops time completely, pulls Sarah from the garage, and brings her and Victor together at the hourglass.

Dor shows Sarah a future in which Ethan is unaffected by her death but her mother is left devastated and full of grief.

Dor shows Victor a future in which his shriveled frozen body is displayed behind glass as a museum exhibit for an emotionless world.

Time resumes and Dor returns to Alli's side in their final moments, where they close their eyes and die peacefully together.

Dor begins as a curious mortal man who creates the first sundial and is visited by a supernatural old man who warns him against measuring time. Despite the warning, Dor continues his timekeeping, marries Alli, and is eventually banished by his powerful childhood friend Nim. When Alli contracts the plague, Dor desperately climbs Nim's tower to reach the gods and stop time, causing the tower to collapse and landing him in a cave where he becomes the ageless Father Time. Thousands of years later, the old man frees Dor with a magical hourglass and a mission to teach two modern people the true meaning of time. Dor finds Victor and Sarah through a clock shop and ultimately stops time completely to pull both of them back from the brink. After showing each of them the devastating consequences of their choices, Dor is allowed to return to his mortal life and spend his final moments peacefully at Alli's side.

The core journey of Father Time, from mortal inventor to immortal guide.

As a child, Dor begins counting objects — the first human ever to conceive of numbers.

Nim grows into a powerful conqueror and begins constructing a massive tower designed to reach and defeat the gods.

Dor and Alli leave their children in the care of Dor's family and move to a simple reed hut on the high plains.

Dor charts the cycle of the moon and creates the first calendar.

Victor's lead doctor tells him that conventional treatment has failed and he has only months left to live.

Sarah carefully prepares to meet Ethan at 8:30 and lies to her mother about going out that evening.

Victor calls his research team and requests everything they can find on immortality.

Ethan texts Sarah cancelling their first planned meeting and she spends the evening alone in a coffee shop.

Victor tours the cryonics facility, is unimpressed but resolves to pay for his own private cylinder.

Sarah wears a revealing outfit to the volunteer shelter in a deliberate attempt to get Ethan's attention.

Victor meets with five lawyers in his private conference room to work through the legal obstacles of his cryonics plan.

Sarah tells Ethan she loves him at Dunkin' Donuts on Christmas and he hands her gift back to her unopened.

Victor stops his dialysis treatments and by Christmas is confined to a bed in the living room.

Grace leaves for the New Year's Eve gala while Victor secretly departs for the cryonics facility with his assistant Roger.

Sarah is startled out of the garage by her mother's phone call and is rushed to the emergency room, where Victor is admitted in the bed beside her.

In the ancient world, young Dor becomes the first human to count numbers, and Nim rises to power while building a tower to challenge the gods. Meanwhile, two modern lives spiral toward crisis: teenager Sarah Lemon fixates on impressing a popular boy named Ethan, while elderly businessman Victor Delamonte learns conventional medicine cannot save him from terminal illness. Victor pivots to cryonics and begins hiding his plans from his wife Grace, while Sarah endures a series of humiliating encounters with Ethan that erode her self-worth. Both characters make increasingly desperate decisions — Victor negotiates with lawyers and stops dialysis, Sarah buys Ethan an expensive watch and confesses her love only to be publicly mocked. Their separate crises converge on New Year's Eve when Sarah barely escapes her garage and both end up in the emergency room side by side.

The parallel build-up of Sarah's heartbreak, Victor's obsession, and Dor's ancient world.

Dor and Alli agree during their evening hillside walk that Dor will refuse Nim's demand and accept banishment rather than compromise.

Dor stays awake all night testing his water clock, and his success makes the gods seem unnecessary — God takes note.

Alli ignores Dor's warning and embraces a plague-stricken elderly woman, secretly pressing the last of their barley cakes into her hands.

The old man tells Dor in the cave that his immortality is not a gift and that his measuring will consume the wonder of the world.

Victor determines that conventional medicine cannot save him and commits to cryonics as his answer to death.

Dor stops thinking altogether in the cave and allows his beard and hair to grow wild before beginning to carve symbols of his mortal life on the walls.

Dor hears Victor's and Sarah's voices rising clearly above all others in the pool and leaps through it, falling back to Earth.

Dor drops the hourglass during a Spanish festival and discovers he can slow and stop time by controlling it.

Victor offers Jed millions of dollars to begin the cryonics freezing process before Victor has officially died.

Dor appears in Victor's private office with the pocket watch and reveals he heard Victor as a young boy praying for more time.

Sarah finds Ethan's public Facebook post mocking her feelings for him and runs outside crying, thinking about suicide for the first time.

Victor almost confesses his cryonics plan to Grace but stays silent and instead whispers his abort codeword to Roger before leaving.

Victor watches Grace discover his frozen body at the cryonics facility and punch and kick the cylinder in fury before walking out.

Dor collapses and begins aging rapidly in the frozen moment as ancient plague blotches appear on his skin.

The old man removes the ring from the hourglass and places it on Dor's finger, then drops the single grain of sand that restarts time.

The novel's most consequential turning points begin in the ancient world, where Dor and Alli make a quiet but life-altering choice to refuse Nim's demand even at the cost of exile, and where Alli's act of compassion toward a sick stranger sets the plague in motion. In the cave, the old man's revelation strips Dor of any comfort, framing his immortality not as a gift but as a punishment for introducing humanity to the tyranny of measured time. Across the modern storylines, Victor privately commits to cryonics and progressively isolates Grace from his plans, while Sarah's discovery of Ethan's cruel Facebook post becomes the moment her grief turns toward thoughts of suicide. The frozen moment forces the most dramatic revelations: Victor must watch Grace's furious reaction to his frozen body, and Dor collapses as his mortality returns. The section closes with the old man's quiet act of returning Dor's humanity, releasing the grain of sand that restarts the world.

The pivotal decisions, discoveries, and emotional shifts that change every character's fate.