As Newton devotes himself to the difficult and solitary path of challenging the existing view of the universe and proving his own theories on celestial movement and gravity, his young scribe Humphrey wavers between pursuing science or following his heart.
| Actor | Role |
|---|---|
 Karl PrunerSir Isaac Newton | Sir Isaac Newton |
 Tyrone SavageYoung Isaac | Young Isaac |
 Kris LemcheHumphrey Newton | Humphrey Newton |
 Lisa JakubClara Storey | Clara Storey |
 Adrian HoughSir Edmond Halley | Sir Edmond Halley |
 Nigel BennettSir Robert Hooke | Sir Robert Hooke |
| CCatherine ByrneCatherine Storey | Catherine Storey |
 Richard McMillanMaster Stokes | Master Stokes |
 Leif BristowSir Christopher Wren | Sir Christopher Wren |
 Agnes BernelleMrs. Billings | Mrs. Billings |
| RRichard KennedyIsaac as Boy | Isaac as Boy |
| SSimon MulhollandSchoolyard Bully 1 | Schoolyard Bully 1 |
| DDanny KennedySchoolyard Bully 2 | Schoolyard Bully 2 |
| JJamie DarlingStudent 1 | Student 1 |