Ep 8. Sea Monster Mash

Zack, Cody, and their friends are all excited when their ship makes a stop at an island where a festival is being held. However, their plans to enjoy the festivities are quickly dashed when they learn of a local legend about a sea monster that terrorizes the waters around the island.

Despite the warnings of the islanders, the group decides to investigate the legend and set out to find the sea monster. They borrow a boat and start to explore the nearby caves where the monster is rumored to dwell. Along the way, they encounter several obstacles, including a tight squeeze through a narrow cave opening and a run-in with a group of territorial squid.

Eventually, they make their way to the sea monster's lair, where they discover that the creature is actually a misunderstood giant octopus. Zack and Cody devise a plan to prove that the octopus is harmless, and with the help of their friends, they manage to convince the locals to leave the creature alone.

The group celebrates their victory by returning to the festival, where they take part in a dance-off competition and have a blast. However, their fun is short-lived when they realize that they've become stranded on the island after missing their ship's departure.

As the group searches for a way to get back to the ship, they come across an old sailor who claims to have a way to contact the ship and get them rescued. However, his plan involves summoning a sea serpent that is said to have magical powers.

The group is skeptical but decides to go along with the plan, and much to their surprise, the sea serpent actually appears. With its help, they contact the ship and are rescued just in time. They bid farewell to the island and its friendly sea creatures and head back out to sea, ready for their next adventure.