In a war-torn world governed by intellect, Lily, known as Flower Garden, aspires to excel as a spy to restore peace. Her excitement soars when she's recruited into a high-risk squad tackling near-impossible missions with a 90% fatality rate. However, her enthusiasm wanes upon discovering her comrades are all spy school rejects like herself. Despite this, guided by the seasoned spy Klaus, these misfits have the power to make a significant impact and blossom into formidable agents.