Samual was in awe as he stared at his newly discovered parents, the Viking gods Groa and Gærrar. He couldn't quite believe that he was the missing prince of Valhalla and that he possessed powers beyond his wildest imagination. As he sat down with his newfound family, he listened intently as they explained to him the history of Valhalla and his role as a prince.

Groa, with her flowing red hair and fierce blue eyes, told Samual of the great battles that had been fought by their ancestors and how they had forged alliances with Asgard and Olympus to maintain peace in the distant land of Valhalla. Gærrar, with his rugged appearance and strong demeanor, explained to Samual the importance of his sword, Mjolnir, which had the power to control the weather and bring thunder and lightning at his command.

Samual was overwhelmed by the weight of his destiny, but he felt a sense of pride and determination welling up inside him. He was ready to embrace his heritage and take his place as the prince of Valhalla. Groa and Gærrar watched with pride as their son donned his new armor and weapons, his eyes gleaming with a newfound sense of purpose.

As they prepared to return to Valhalla, the Doctor and Callum offered to accompany them on their journey. The Doctor, with his timeless wisdom and knowledge of the universe, was eager to explore the land of Valhalla and learn more about its gods and legends. Callum, with his quick wit and resourcefulness, was ready to assist in any way he could.

The journey to Valhalla was long and arduous, but Samual was determined to prove himself as a worthy prince. Along the way, he encountered challenges and dangers that tested his courage and strength. He fought off fierce creatures of the underworld, battled dark forces that threatened the land, and proved his worth as a warrior and a leader.

Upon their arrival in Valhalla, Samual was greeted with cheers and applause from the gods and warriors who had been waiting for his return. He stood tall and proud, his sword held high, as he swore to protect his people and uphold the values of honor and courage that the Viking gods stood for.

As the days passed, Samual trained in the ways of combat and diplomacy, honing his skills and learning the secrets of his ancestors. He formed alliances with the gods of Asgard and Olympus, forging bonds that would last for eternity. He led his people into battle against the forces of darkness, standing fearless and resolute in the face of danger.

The Doctor and Callum were amazed by the sights and sounds of Valhalla, by the noble warriors and majestic landscapes that stretched as far as the eye could see. They marveled at the ancient ruins and towering citadels, at the songs of triumph and the feasts of celebration that filled the halls of the gods.

But as time passed, a new threat emerged that threatened to destroy everything that Samual held dear. A dark force from the depths of the underworld, led by a malevolent being known as the Time Demon, sought to plunge Valhalla into chaos and despair. Samual knew that he would have to face this formidable foe alone, to protect his people and fulfill his destiny as the prince of Valhalla.

With his trusted companions at his side, Samual set out to confront the Time Demon and restore peace to Valhalla. The battle was fierce and brutal, with lightning flashing and thunder roaring as the two adversaries clashed in a titanic struggle. But in the end, it was Samual's courage and determination that proved to be his greatest weapons, as he vanquished the Time Demon and saved Valhalla from destruction.

As the dust settled and the sun rose over the land of Valhalla, Samual stood triumphantly, his sword shining in the light of victory. The gods and warriors cheered and raised their voices in praise of their prince, the hero who had saved them from certain doom. And as he looked out over his kingdom, Samual knew that he had finally found his true place in the world, as the prince of Valhalla and the guardian of its eternal peace.

The Doctor and Callum bid farewell to Samual and his family, knowing that they had played a part in a great adventure and witnessed a remarkable tale of bravery and sacrifice. As they stepped back into the TARDIS and set off on their next journey through time and space, they carried with them the memory of Valhalla and its legendary prince, a hero whose name would be remembered for all eternity.