IU officially bids farewell to her 20s and welcomes her 30s with her "IU Documentary 'Pieces: 29th Winter'". Artist IU, Ordinary Lee Ji Eun. The top soloist gathers pieces of memories and remarkable moments of her 13-year journey as a singer-songwriter. Through the past undisclosed clips and IU’s most honest thoughts that were not publicized on purpose, and the stories of those who have seen IU closest, we meet her twenties and the pieces in between.