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.