At night time, Cacao and the gang saw Wheat(in a school swimsuit) saying that she saw a lake monster at night. Wheat tells them how she saw the monster and revealed that she was the only one who escaped while the other S.M.A.T team are sucked in by it. But for Cacao, Almond, Green Tea and Red Bean, they're only interested in the treasure so they go in deep water in Truffle's submarine. Meanwhile, Mint and Crunchy Bug are underwater in a steel cube trying to get rid of the gang but failed twice and the monster is revealed to be a giant squid and the whole gang is sucked in by the water hole...