Needing a fish for a special meal, Sisters Bertrille and Sixto go to Sister Sixto's Uncle Gus Mendoza, who she considers the most expert fisherman in San Juan. However Uncle Gus has been a little low on his fishing luck, and secretly grabs a fish for the sisters from Lily's Fish Shack, owned by Lily Romano. Apparently, Uncle Gus' luck is due to the the larger fishing companies, who have modern technology, such as sonar and helicopters, to locate schools of fish before someone like Gus can get to them. Gus has been financially supported by his family as well as Lily. But Lily is facing problems of her own as her shop is behind on payments and the bank is threatening to foreclose. To solve everyone's problems, Sisters Sixto and Jacqueline suggest that Sister Bertrille be Gus' overhead fish spotter. They figure she can get away with doing so if she flies between Gus and the sun since Gus is near sighted, so wouldn't be able to tell that it's her flying overhead. She does so. It works, ...