Luna faces a tense moment as she decides whether to tackle the notoriously difficult Test B, an aircraft carrier math problem no one has dared attempt before. Her rival, Aurora, confidently chooses the safer Test A, planning to maximize points by providing three different solution methods. Luna insists on taking the risk with Test B despite warnings she can't switch once the test is unsealed. As Aurora prepares her multiple-approach strategy, Luna's bold choice sets the stage for a high-stakes challenge that could change their standings, leaving viewers wondering if Luna’s gamble will pay off or backfire.