A group challenges an S-rank beast, initially deeming it weak and declaring victory prematurely. However, the beast, called the Thunderbird, was infected by a virus that gradually activates, proving its formidable nature. One participant orders the Thunderbird to be destroyed, but the beast turns the tide by devouring this attacker. This unexpected attack shocks the group, as the Thunderbird gains evolution points and the ability to evolve after consuming the opponent. The episode ends with the beast poised to evolve, escalating the conflict and leaving the group alarmed at what comes next.