"Our little mischief puppy" centers on Seungmin, the spoiled, stubborn youngest of the Stray Kids, whose endless mischief pushes his possessive and protective hyungs to their limits. Despite their fierce love and constant attention, Seungmin remains unaware and indifferent, brushing off their devotion as he follows his whims. Through tantrums, pranks, and tender moments, his brothers scold, tease, and dote on him, determined to keep him close-even if Seungmin couldn't care less.