Lightning's Big Splash is a Mater and Friends Story.
Ramone the low rider wants a rest, but Lightning the red race car is talking to some cars about the time he had gone through bad weather to help Mater the tow truck. Mater is looking at a sign that says, "Danger," and tells Lightning that they cannot go past the sign. One day, Lightning asks some lemons to give him a push when they arrived at the key, which they do, and send Lightning rolling past a danger sign, and crashing into the water! Finn McMissile, the super intendant, scolds Lightning for what he had done, and after Lightning is rescued, Ramone gets the last laugh when he takes Lightning to be repaired.