After defeating Yu Ang and exposing his lightning element, Mo Fan gains seven days to enhance his powers at the Underground Holy Spring. However, his training is interrupted by the sudden appearance of fierce monsters in Bo City, breaching its supposedly secure borders. With the city in chaos, Mo Fan must transport the condensed spring in a vial to a safe zone amidst dangerous creatures and the menacing Black Order. Can Mo Fan safeguard the sacred spring and prevent it from being seized by the enemy?