It was released in both Korean and Chinese versions by their label SM Entertainment.
[1] It was the final release by members Kris and Luhan following their lawsuits in May 2014, and October 2014 respectively.
Produced by The Underdogs, "Overdose" described as a heavy-hitting, urban-pop banger with hard rhythms of hip-hop, R&B hooks and electronic beats with the lyrics of the feeling of overdosing on a sweet drug as a metaphor to describe a man's intense addiction to love.
The music video shows the members in a maze-like setting while they perform the choreography.
[4] Exo-K began performing the song on South Korean music television programs on April 11, 2014 and Exo-M began performing the song on the Chinese weekly music program, Global Chinese Music on April 19.