I don't own Dragonball Z. But I technically own Tempest/Tomo Lorien.
This series takes place after Tempest: First Fire.
There are 5 chapters in this series as well.

Tempest(Book 2): While You Were Away

Chapter One: Earth Unguarded?

All was seemingly peaceful for planet Earth. With Vegeta gone, it appeared it return to a peaceful place once again, a rare occasion indeed. However, the Z team was a shambles. The battle with Nappa and Vegeta had taken its toll. Tien, Chiaotzu, Yamcha, and Piccolo had all been sent to another dimension, though that would later work in their favor. Piccolo's departure was especially devastating, since that meant that the Dragonballs of Earth were gone as well.

Gohan, Bulma, and Krillin had already gone ahead to planet Namek, the original planet of the Dragonballs, to find the remaining set of Dragonballs and revive their lost friends. Goku took the time while they were away to finish recovering from the previous battle. He then went to Dr. Briefs, Bulma's father, to check up on his travel arrangements. Goku had asked the technical genius to repair his original Saiyan space pod for his own trip to Namek. Once he got there, he found that the scientist had lived up to his name: the spaceship was in tip-top shape.

Mr. Popo looked up at the sky, and saw a fleeting light fly off toward outer space. 'It must be Goku,' he reasoned. He looked down at the flowers of Kame's garden, and sighed. It was so lonely now that Kame was gone. When Piccolo had left this dimension, it caused Kame to fade too, since they were spiritually linked. However, Mr. Popo wasn't totally alone.

A shadow emerged from inside Kame's small hut. He walked up behind Mr. Popo, but looked down off Kame's lookout, ignoring the light trail leaving Earth. "With the last member of Earth's Special Forces away, the Earth is left barely protected. If any trouble should arise, there probably won't be anyone strong enough to save it. I feel it is my duty to go down and guard it myself, but am I ready? Is my extensive training here enough?"

Mr. Popo looked at the fighter, and nodded solemnly. The man looked young, but no one knew exactly how old he really was. After all, a man of his power could be anywhere from 20 to 200 years old. Not to mention, he was an elemental, a person capable of using the world around him for strength, or for fighting when necessary. This power was bestowed upon him in his early childhood, and he later was brought to Kame for training. Kame grew fond of him, and taught him well, because an elemental has an oath to defend the world he lives in, very similar to the Kame himself.

**

A fat white cat with a large wooden cane peered over the edge of a tower high up in the sky. It was Korin, wise beyond his years, and the gardener of the powerful and mysterious sensu beans. He always made sure to keep a bag or two with him at all times, in case of emergency. After all, sensu beans are hard to grow, and take a long time when they do.

'I hope Goku is feeling better,' he thought, and smiled when he remembered that he had persuaded Yajirobe to deliver a bag of sensu beans to Goku, to help him finish his recovery. As he saw the shooting star go out towards the unknown, he knew that Goku would be just fine. As Goku's ship left his sight, he turned around to enter his house, but met instead a blast of energy which knocked him unconscious.