In this episode, S, T, O, and P hop on a runaway bus.


T and O run quickly so that they won't be late. P pops in and tags along with them. B, U, and S run too. S tells them to stop.

b-u-s, BUS!

A bus appears, and T, O, and P steal the bus. S thinks...

s-u-b, SUB!

S, U, and B hop in the sub, but it can't move. So they chase after the bus. Meanwhile on the bus, P pops downstairs and finds that there's no driver, and pops back up. S hops on the bus.

What will they do?

  • POST - Letters fly out of nowhere. T finds a bus pass.
  • POTS - It's raining pots.
  • SPOT - O gets spots all over.
  • TOPS - Tops fly out of nowhere.
  • STOP (star word) - The bus stops at a bus stop and everyone hops off. B and U hop on, and S flies in. As the bus leaves them behind, it reappears, thanks to P, and O and T hop on. But O doesn't know where they're going.

Unusual word

  • The one and only word is OPTS.

Characters (in their order of appearance)



  • U only says his sound in this episode.

Alphablocks episodes

It's silly that on the top there is “Busopt”.

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