Big Toot is introduced as Little Toot's father who is serious unlike his son. Just as Little Toot playfully floats across the harbor, he upsets his father for the playful antics he did. In anger, he scolds him to act like a real tugboat to which despite this, Little Toot still behaves in a playful manner until he follows his father hauling another ship. Just as he spins the big cargo, Big Toot reacts in shock much to his son's antics, causing the ship to crash onto the big city. As punishment, Little Toot is in trouble for the antics he did just as his father sadly heaves a boat full of debris in it to clear out the mess his son did.
Later when the tugboats near an SOS alert, he and the other tugboats plan to rescue to ship but the others retreat due to a big storm causing giant waves to emerge; Little Toot manages to rescue a big ship in distress using the power of courage, turning the fear into faith so that he can make his father proud. After Little Toot is shown to have survived the storm, Big Toot feels proud for mastering his bravery in rescuing the ship during the storm.