Heartwarming: The Pirates! In an Adventure with Scientists
The Pirate Captain reconciling with his crew during the climax.
The very end. "Welcome back...Captain."
Then they HUG.
The moment when the whole pirate crew forms a chain on the sinking ship to save Pirate Captain and Polly from hitting the turbine's blades. It's even lampshaded, with one of the crew calling this their "most heartwarming adventure ever."