Kyle Johnson is the star of his basketball team and an incredibly lucky guy. But when a charm he wears around his neck is stolen by a leprechaun named Seamus, his good luck turns bad overnight. When Kyle's ears become pointed, his hair turns red and he starts shrinking, his parents reveal a family secret – Kyle is half leprechaun, and without his charm, he will turn into one for good! With the help of his friends and advice from his 200 year-old grandfather, Kyle works to find Seamus to restore his human form and his good luck!