Inmun, a chaebol academy director, raises his granddaughter Hyemi and Haneul in place of his son and daughter-in-law who are abroad. He also boards Taehee, Yeonhong, Dongwook, and Sungjin in the academy building. Taehee, Yeonhong, Dongwook, and Sungjin comically reveal dramatic laughter between love and friendship.