Marcella is under pressure to deliver the perfect day for a Middlesbrough couple tying the knot on board, having been planning their nuptials for two years - and it proves a poignant moment for Captain Bob as it is the last marriage he will conduct before he retires after 46 years at sea. Bar manager Lilia is in desperate need of a new juggling bartender and shore excursions agent Timothy is given more responsibility as he dispatches passengers into their tour buses.