Who we follow is a young brave Border collie named Rust. Who lives in under the roof of humans. But after a horrible flood, Rust was left behind. When he was forced to set off to the forest. As he did, he met the forest dogs as known as Cave-pack. Struggling to survive due to natural disasters. Worst of all the other pack who caused them horrible trouble. Where we have Rust who steps up into Cave-pack. That's where everything changed. As he set off to his journey. He was forced to faced difficult challenges to save the pack. And saved his land and his pack-mates. He follows his paw prints to set off his journey but not alone. But with his pack-mates before it's too late or.. Cave-pack will be destroyed.