In The Giant Shell at Cookie Beach, Sam and Lila's summer adventure takes an unexpected turn when they discover a mysterious shell washed ashore. The shell, glowing with ancient magic, leads them to a hidden world beneath the sea, where they uncover a powerful sea stone capable of controlling the tides and ocean currents. But when a dark force seeks to claim the stone's power for evil, Sam and Lila must use their newfound abilities to protect the balance of nature. Full of mystery, adventure, and the magic of the ocean, their journey will change Cookie Beach forever.