Yn y gwanwyn, gyda'r gwynt ysgafn yn chwythu dros y clogwyni creigiog, safai goleudy segur, ei baent yn rhwygo a'i ffenestri'n cracio.

In the spring, with the gentle wind blowing over the rocky cliffs, stood a dormant lighthouse, its paint peeling and windows cracking.

Roedd Rhys, sydd yn dditectif amatur gyda llygad craff, yn teimlo rhywbeth rhyfedd.

Rhys, an amateur detective with a keen eye, sensed something strange.

Bob nos, roedd golau dirgel yn tywynnu o'r goleudy hwnnw, er ei fod wedi'i adael.

Every night, a mysterious light shone from that lighthouse, though it had been abandoned.

Roedd Cerys, arbenigwraig goleudy, yn breuddwydio am adfer y goleudy hwn.

Cerys, a lighthouse expert, dreamed of restoring this lighthouse.

Cysylltodd Rhys â Cerys.

Rhys contacted Cerys.

Ynghyd â'i gilydd, roeddent am ddatrys dirgelwch y golau.

Together, they intended to solve the mystery of the light.

Gosododd Rhys gynllun.

Rhys set a plan.

"Cerys, rhaid i ni fynd yno heno," meddai Rhys yn benderfynol.

"Cerys, we must go there tonight," Rhys said determinedly.

"Bydd yn beryglus, ond dw i'n ymddiried yn dy reddfau," atebodd Cerys.

"It will be dangerous, but I trust your instincts," responded Cerys.

Cododd y gwynt wrth iddynt neidio i mewn i'r car, natur yn cychwyn storm annisgwyl.

The wind picked up as they jumped into the car, nature starting an unexpected storm.

Ond ni allai unrhyw beth rwystro eu hawydd i ddatgelu gwirionedd y goleudy dirgel.

But nothing could stop their desire to uncover the truth of the mysterious lighthouse.

Cyrhaeddasant a chodasant ar ben y clogwyn.

They arrived and climbed to the top of the cliff.

Roedd y goleudy yn ymddangos yn fyw wrth iddyn nhw fynd yn nes.

The lighthouse seemed alive as they got closer.

"Ydych chi'n barod?

"Are you ready?"

" holodd Rhys, ei lais yn cysgodi gan y storm.

asked Rhys, his voice overshadowed by the storm.

"Ydw, gad i ni fynd," atebodd Cerys, ymroddiad yn ei llygaid.

"Yes, let's go," answered Cerys, dedication in her eyes.

Crogasant y lamp brys gan dawelu eu nerfau, a chamu'n dawel i mewn i'r goleudy.

They clutched the emergency lamp to steady their nerves and quietly stepped into the lighthouse.

Mewnol, roedd walwyddau a cherrig yn swnian o dan eu traed.

Inside, planks and stones creaked under their feet.

Pan aethant i'r tŷ golau ar ben y twr, darganfyddwyd hen fynedfa gudd.

When they reached the light room at the top of the tower, they discovered an old hidden entrance.

Y tu ôl iddi, roedd bocs.

Behind it, there was a box.

"Edrych!

"Look!

Llun map," dywedodd Cerys gyda chyffro.

A map drawing," said Cerys excitedly.

Cyn iddynt allu archwilio, trodd y lamp hithau'n dawel.

Before they could explore, the lamp suddenly went out.

Gwelodd Rhys gyfeillion newydd iddo: beacon anghofiedig ar y map!

Rhys saw new companions for him: forgotten beacons on the map!

Rydym hebddu ar ôl trysor hanesyddol.

They were without a historic treasure.

Profodd y storm yn alluog, ond penderfynodd weithredu.

The storm proved powerful, but they decided to act.

Ddechreuodd Rhys a Cerys gloddio.

Rhys and Cerys started digging.

Gweithred rhagweithiol Cymerodd yr eira oddi ar y trysor dirgel, a llenwodd Cerys â chwant i adfer y goleudy er anrhydedd i'w hanes.

A proactive act took the snow off the mysterious treasure, and Cerys was filled with a desire to restore the lighthouse to honor its history.

Gwnaethpwyd y trysor a gyflwynwyd i'r dref, a derbyniodd pawb bleidlais i adfer y goleudy yn ddiogel.

The treasure was brought to the town, and everyone voted to safely restore the lighthouse.

Addawodd Cerys y byddai nhw'n manteisio ar werth y trysor i adragor y goleudy.

Cerys promised they would use the treasure's value to reopen the lighthouse.

Dysgodd Rhys werth hanes a chydweithio, a daeth Cerys o'r syniad i grediniaeth, parhau i hyderus i ddilyn ei hangerdd.

Rhys learned the value of history and cooperation, and Cerys turned the idea into a belief, continuing confidently to follow her passion.

Yn y diwedd, roedd y goleudy yn safon ar gyfer y dref, a dyfalbarhaodd er cof i Rhys a Cerys.

In the end, the lighthouse was a symbol for the town and stood firm in memory of Rhys and Cerys.