Here is a concise summary of the dialogue:
**Title:** Tom's Encounter with Will-Z
**Summary:**
Tom asks his friends to entertain his old summer camp roommate, Willy (now known as Will-Z), while he finishes his "secret invention" (a catapult). However, upon arrival, Will-Z surprises everyone with his transformed, extremely cool persona, participating in the "Extreme Zportz Tour Zeriez" (E-Z-T-Z). As Will-Z gains admiration from Tom's friends, Tom becomes jealous and attempts to outdo him with an extreme stunt: launching himself into the sun using his catapult. The stunt fails, and Tom suffers a wipeout. After a heart-to-heart, Tom learns a lesson about being himself and values his friendship with Will-Z, who departs for his next E-Z-T-Z competition, leaving Tom and his friends in awe.
Here are the key facts extracted from the text, each given a number and kept as short sentences:
1. **Tom asks his friends for a favor** related to his friend Willy visiting.
2. **Willy (now known as Will-Z)** is an old friend from summer camp.
3. **Will-Z competes in the Extreme Zportz Tour Zeriez (E-Z-T-Z)**.
4. **Tom is building a secret invention**, implied to be a giant catapult.
5. **The catapult is intended to launch a boulder into the sun**.
6. **Will-Z gives out Z.I.P. passes** for the E-Z-T-Z Tour.
7. **Ben modifies Will-Z's skateboard into a hoverboard**.
8. **Will-Z appears on "Tommy Toprock and the Hip Hop Squad"**.
9. **Tom tries to one-up Will-Z with an extreme stunt**.
10. **Tom attempts to launch himself into the sun using his catapult**.
11. **Tom fails the stunt and suffers a wipeout**.
12. **Will-Z inspired Tom to be cool, leading to Tom's initial jealousy**.
13. **Will-Z stops drinking soda after an incident at camp**.
14. **The E-Z-T-Z Tour has a "street-yacht" as a form of transportation**.
15. **Will-Z leaves for the next E-Z-T-Z competition after visiting**.
16. **Tom reflects on being himself after Will-Z's visit**.
17. **Friends joke about wanting to be like Will-Z**.