Bayani and Ligaya, two Filipino children from a middle-class family, are the protagonists in Across the Seas. They live on an island in northern Philippines where their father is a lighthouse keeper. As toddlers, they never knew what lay beyond their island home until their father received a vacation notice from his home office in Manila. In their travels through various provinces, they learn about unfamiliar customs and traditions and meet many relatives and new friends. Most of all they learn about love, peace, tolerance and kindness to all living things.