Heartwarming / Misty Island Rescue

• Thomas saving Diesel. Despite the recurring Fantastic Racism between the two rivals, Thomas is genuinely horrified when Diesel nearly falls over the unfinished bridge, and vehemently pulls him to safety. Diesel rather earnestly thanks him afterwards.
• While trapped in the tunnel, the Logging Locos are kind to Thomas when he blames himself for them being trapped. They try to cheer him up and speak softy and gently to them. Up until then, the Logging Locos and Thomas's relationship was rather rocky and turbulent. With them not really being friends. But this scene is nothing short of touching and this scene cements their friendship with each other as well as this scene being the first time the Logging Locos show their kind and caring side as they were rather dismissive and gruff towards Thomas up until that point.
• Percy finding Thomas in the tunnel in Misty Island Rescue is nothing short of touching.
• Following that Thomas goes back to Misty Island after Sir Topham and the other engines have started a search party for him. Sir Topham is so overjoyed at finding Thomas he throws his top hat into the air. Thomas is horrified as his master's beloved hat disappears into the mist, however Sir Topham is unfazed:
  Sir Topham: I can find another hat, but I can never find another Thomas.