Episode 1

Bell and her bedridden father depended on each other, but when her boyfriend Top took her to a graduation party, he was involved in a drug case that did not belong to her, sending her to jail. In prison, she met Kae. This inmate not only accompanied her, but also introduced her to various situations in the prison, including the 3D gang led by Dao.Dai controls everything in the prison because of her affair with the prison guard leader Wichai; her sister Deuan is her right-hand man; and their cousin Deedee is the most troublesome person in the prison.

Kae took Bell to work in the library, where he met Maengpor, who acted as a messenger, responsible for delivering items to prisoners from the outside world.However, when Bell was managing the library, he mistakenly gave Deedee's belongings to other prisoners, causing Deedee and his accomplices to trouble Bell.Bell tried to escape Deedee's pursuit, and on the way he met Claire - a mysterious prisoner who even the 3D gang dared not provoke, nicknamed “Mad Dog”.Although Claire's appearance saved Bell from being beaten, Deedee refused to give up easily.She bribed a new prison guard who hated Claire to let them out at night so they could deal with Bell; in exchange, Deedee allowed the new guard to attack Claire and keep it secret.