Is it just the (bad) luck of the Irish that keeps pushing Brennan and Quinn together, or something more?

Quinn Hayes and Brennan O'Keeffe are nothing more than perfect strangers, but when their paths cross often over the years, always on St. Patrick's Day, they realise that they seem to share a connection they've never been able to find with anyone else. Their personal lives are messy and chaotic and ever-changing in so many ways, but their link always remains the same — until a struggling, troubled Quinn makes a misguided mistake, and as a result, believes she has lost Brennan for good.

Years later, she unknowingly walks into his bar, and their lives become entangled once again, with Quinn landing a bartending job as Brennan's co-worker at Irish pub, O'Keeffe's. Will they finally get it right this time, or will Brennan's secrets and Quinn's shadowy past ruin everything once and for all?