Myst3ry ("mystery") is the first single album recorded by South Korean girl group Ladies' Code.

On September 3, 2014, the group was involved in a car accident that ultimately claimed the lives of members EunB and RiSe.

[1] In the following months, the remaining members went on hiatus to focus on their physical and mental recovery, eventually resuming practice schedules while continuing to receive counseling and follow-up medical treatment.

[4][5] Released February 24, 2016, the music video for "Galaxy" was directed by Jo Bum-jin and VM Project and choreographed by Kim Hwa-young.

Due to the sensitive nature of the group's return, Polaris Entertainment reported that variety show appearances would be limited to avoid misunderstanding.