Yvette refuses to let her unstable beast fight, but her cousin mocks her, doubting the strength of Yvette's S-rank beast and insisting it’s not worthy of protection. After taunts escalate, Yvette accepts a fight to prove her beast's power. Jason volunteers as the referee, but secretly plans to cripple Yvette's beast under orders from his father, who believes killing an S-rank beast will render it useless. Despite being level 10, Yvette’s Thunderbird faces ridicule from those who claim its opponent, a level 1 black creature, will dominate due to supposed flaws in Yvette’s beast. The battle begins amid brewing sabotage.