"The flashlight was getting harder to hold on to, it felt wet in the palm of my hand. I unzipped my jacket to let some air in, I was starting to feel warmer. I wanted to look behind myself to see how far away from the ladder I had traveled. I wanted to look, to know, to let my senses get an idea of how far under The Redwoods I was, but the idea of turning my back to the darkness that loomed ahead was overwhelming. I couldn't look back. Instead, I kept inching forward, sweeping my flashlight, little comfort that it was, back and forth over the damp and earthy ground. There seemed no end in sight." Secret codes, perilous climbs, and treacherous floods are just a few of the dangers Emma, Ella, Sterling, and Keny must face to save their Spring Break Vacation, Miss Iris, and possibly, their friendship. Join four unlikely sleuths in their first adventure, as they find themselves deep underground racing against time, and a villain known only to them as Enemy No Name, to save their beloved Miss Iris and her daycare from ruin.