Wonder Egg Priority centers on Ai Ooto, a young girl deeply affected by the death of her close friend.
Haunted by this loss, she's presented with a strange opportunity: to purchase "Wonder Eggs."
Within these eggs reside people facing their own personal struggles and traumas, existing in a dream-like world.
Ai must enter this world and confront these adversities, rescuing them from their inner demons.
She believes that by saving these people, she can somehow understand and ultimately save her deceased friend.
As Ai continues to break the Wonder Eggs, she's forced to confront not only the darkness in others, but also her own past and personal fears, leading her on a journey of self-discovery and healing.