Major incident headquarters… 1500 hours
A tanker loaded with toxic chemicals is headed straight for an oil rig. The only possible outcome — disaster!

Grace Darling Hospital… 1530 hours
A team, led by Dr. Seb Bridges, is ready and waiting — to save lives.

Emergency room… 1600 hours
Dr. Libby Bridges is on her way to the E.R., determined to ask Seb for a divorce.

For Seb, only two things matter — saving lives and saving his marriage. This will be the most important night of his life and the clock is ticking.