Mercury’s Little to Big ad turns patient stories into brand proof

Mercury’s “Little to Big” campaign, created by McCann New Zealand, launched in late September 2026 to mark 25 years of customer support for Starship Children’s Hospital. It features former Starship patients who were treated as children during that quarter-century and are now adults, telling their own stories. One of them, Crissy, describes being placed in an induced coma and having her family gather to say goodbye before she survived. The campaign is running across TV, cinema, outdoor, digital, social media and radio, with a donation match running until 8 November.

The levers it pulls

The film does not rely on a rational utility message. It uses three behavioural levers.

• The identifiable victim effect. Rather than leading with $20 million in aggregate, the film lets named former patients such as Crissy tell specific survival stories. A single face and a near-loss make the abstract number feel personal and urgent.
• Temporal landmarks. The 25-year anniversary turns an ongoing partnership into a fresh decision point. Milestones help people step back and re-evaluate their support, which is exactly the opening a donation ask needs.
• Matched giving with a deadline. Mercury promises to match the first donation made by customers who start between 27 September and 8 November 2026, up to $25,000. That adds a clear, time-boxed reason to act now instead of later.

The bet the brand is making with it

Mercury is betting that long-term emotional proof can carry an energy brand beyond price and service comparisons. The campaign positions Mercury not as a donor writing a cheque, but as part of a 25-year story that helped children survive and grow up. Frith Morrissey, General Manager Brand and Marketing, says the milestone is the moment to reflect on the partnership and keep the momentum going. McCann New Zealand CCO Leisa Wall frames the choice plainly: giving these adults the chance to tell their Little to Big story was a way to play into emotion while showing what customer money actually does.

The risk is that tear-jerking content only lands when viewers believe the brand has earned the right to tell it. Mercury’s answer is the longevity itself: $20 million raised over 25 years, with real former patients as the evidence.

What to borrow for your next campaign

The transferable pattern is not “make people cry.” It is to make the outcome visible and specific.

• Show the person after the outcome, not just the need. A former patient speaking as an adult proves the change better than a dramatised plea.
• Use a real milestone to reopen a long-running story. An anniversary gives people a reason to notice again.
• Pair emotion with a simple, time-bound next step. The $25,000 match is small compared with $20 million, but it gives the viewer a clear way to convert feeling into action.

Watch the original: Mercury on YouTube

Source: Campaign Brief