The term 'ongoing story' can be summed up in the crossword solution of 'SERIAL, ' which is a six-letter word. A SERIAL is a type of narrative that is told in multiple parts, usually released over a period of time. It is often used to refer to television shows, comic books, and other forms of media that are released in installments. The ongoing story of a SERIAL is typically continued from one installment to the next, allowing for a longer, more complex plot.