Three ordinary 'monsters' with their own characteristics - Brooke, Lilia and Ulysses - strayed into a bizarre, diverse and intertwined fantasy world due to strange encounters. They must work together on a ridiculous and dangerous journey. The challenges in each volume are upgraded, from entering the world for the first time to uncovering the secrets of the multi-dimensional administrators, to the hidden dangers caused by the villains. Through mutual support and humor, they learn to face themselves honestly, break through their own character weaknesses, and grow in teamwork and trust. In the end, the three of them worked together to complete the redemption of themselves and each other, and embarked on a new journey together, interpreting the resonant journey of "Monsters also have light". The whole book has a compact plot, a lively rhythm, a reasonable structure, and echoes back and forth. Each volume has an independent theme and clear stages of growth, but the main line runs through it completely, creating a novel, warm and hilarious adventure story.