A ghetto nerd living with his Dominican family in New Jersey, Oscar's sweet but disastrously overweight. He dreams of becoming the next J. R. R. Tolkien and he keeps falling hopelessly in love. With dazzling energy and insight Dìaz immerses us in the tumultuous lives of Oscar; his runaway sister Lola; their beautiful mother Belicia; and in the family's uproarious journey from the Dominican Republic to the US and back.