In my personal opinion I think its too early for this series get animated. But I understand why they went ahead and did it. The manga fan base is growing rapidly in Japan and its doing well in sales, but the manga just break the 100 mark in chapters. Any who, what ever heres the plot for you cats.
Plot: Asta and Yuno are orphans who were raised together from birth in a church on the outskirts of the Clover Kingdom. In a world where everyone has Magical Power (魔力Maryoku), Asta was born without any. Unlike him, Yuno was born as a prodigy with immense magical power and the talent to control it. The story follows the two foster brothers as they compete to see which one will become the Wizard King, Clover Kingdom's strongest Magic Knight. But How can Asta become a magic knight without magic? But when Asta gains an unknown "Anti-magic" that can destroy all magic, their journey begins; Asta with his rare anti-magic and physical strength, and Yuno with his wind magic and magical prowess.