Danger Island

Episode 25 (1x25)

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A fight begins between Mu-tan and his Skeleton Men and Dr. Hayden, Morgan, Link and Chongo. Mu-tan escapes, but drops the map in the river. After defeating the Skeleton Men, Dr. Hayden and his party follow Mu-tan, but the Doctor tells them to let him go, that it is more important to find the map. They begin their search and Chongo finds the map.