A fat girl with cheerful and generous personality gets caught between her feeling for her childhood sweetheart and a famous idol, after an unexpected appearance change.

As she approaches thirty, Wang Xiaolu, a city girl accustomed to partner-based friendships, watches her social circle fade as friends move on with their lives. Left confronting sudden loneliness in a fast-paced urban world, she sets out on a new journey to find connection, redefine companionship, and rediscover herself.