Some archival versions of the episodes are available for streaming and download on the Internet Archive . Series Overview
I understand you're looking for a guide to watch Metti Oli (a popular Tamil soap opera that aired on Sun TV) online. However, I must emphasize that is important to respect copyright and support the creators. Metti Oli All Episodes Online
Before you start streaming , appreciate its legacy. This serial broke multiple taboos: Some archival versions of the episodes are available