The beginning

Serena is a Shetland sheepdog. She was trained for war. But also as a therapy dog. She was taken by Hydra and experimented on. She now has powers. She's fast. Faster than Quick Sliver. She's strong, strong enough to lift a bus. Her senses are tenx higher than the average wolf. What happens when she's rescued by the avengers. What happens when Scarlet Witch recognizes her as well as Black Widow. read to find out.