Description
Pan fydd Grimstink y creadur o’r gofod a Layla y ferch dair ar ddeg oed yn cyfnewid planedau, rhaid iddyn nhw fynd ben-ben â rhyfelwyr, botiaid angau, ficeriaid a wardeniaid traffig yn eu brwydr am dynged y Ddaear.When Grimstink the alien and Layla the thirteen-year-old girl swap planets, they must face down warriors, deathbots, vicars and traffic wardens in their battle for the fate of Planet Earth.
