Te Rerehua and Sam know that nothing in nature is identical; not the eels, not the stones on the beach ... not even the twin stars of Matariki, Waiti and Waita: one looks after fresh water and lakes, the other saltwater – the ocean. When they notice Waiti is looking dim one night, Grandma and Poua enlist the children’s help with planting around the edges of the lake to help keep it healthy. But at night, those sneaky Patupaiarehe come and pull up the plants! Grandma devises a plan to scare those naughty fairies away ...