A mystical secret society must protect its citizens and children from a malicious and mysterious outside invader that threatens to destroy their beautiful and peaceful world. It's a day in the life in The Garden of Secrets.

In the Garden of Secrets, a mystical school where the children are inexplicably protected from a malicious outside world, the students must learn to master themselves before mastering The Keys of Life taught to them by the animal teaching staff, the Bunny Class, Turtle Class, Butterfly Class, and Owl Class. Classes are divided by a pathway of gardens: Blue and yellow flowers for senior students, yellow and white for younger high-schoolers, purple and lavender for middle-schoolers, and bright pink for elementary and younger students. The eldest graduating class must follow the burgundy path.

The students must discover themselves and who or what they love most, in addition to conquering their fears. Meanwhile, outside forces threaten to infiltrate the shield surrounding this mystical garden, which must be protected by the Celestial Guardians and the Moon Goddess in order to survive. Up-and-coming Guardians arise from among the graduates, ready to join an epic battle to protect their beautiful realm.